Hey OP, congrats on your engagement and wedding that is due soon I hope.
I have been to a very bad wedding and I also just recently got married myself. I will give you advice based on the bad wedding and also my own as everyone said it was the best wedding they had ever been too!
First of all the worst wedding was a foreign wedding so it may not really come into to play here. But there was over 500 guests and the whole thing was just so disorganised in the sense the food came really late, the ceremony ran late, everyone was waiting, hungry for a long time.
When I got married me and my husband took along time to make sure everything was as perfect as it could possibility be.
Venue
We choose a venue that was very central for everyone who was coming. The idea of a castle or somewhere really remote did interest me but then people would have to pay a lot of money for hotels or long journeys to get there and considering some guest were elderly we just wanted to consider everyone who was coming. For our wedding a big part was making our guests very happy (even though its our day) so every thing was thought about down to the very little details. The ceremony was in church and we arranged for a bus to take everyone from the ceremony to the hotel for the reception.
Church
At the church I had welcome bags handed out to every guest that contained a bottle of water, program, confetti, biscuit and some tissues and other small things. A lot of people thought why are you doing this but it went down a treat and everyone loved having the bottled water for the bus ride to the reception. I also want to keep the church simple but elegant. We had a string trio and a singer for when I walked down the aisle. We personalised the ceremony to our tastes and everyone felt really included. There was not much decoration in the church apart from pew ends and some flowers but we did that on purpose to surprise everyone at the reception.
Reception Decoration and personal touches to the tables
At the reception, one of the biggest things for me was how the venue looked and making sure it was out of this world. I only get married once right? I had a wedding planning company completely transform the function suite and it was really was wow standard. On the tables, we had candle favours with our wedding names and date on them (I can pm the link from Etsy if you want) and we also had a menu on each table that had a very special thank you message from coming on the back. This was copied and changed slightly from Pinterest. We also had a DJ at our wedding from the very beginning of the reception so as people were being seated they got to hear faint music in the background which played throughout the meal (apart from the speeches). It did not feel like a day time and evening, it all just merged into one big party. If you want any ideas on my decor please PM me, I did go overboard but it was my one big wedding thing that I wanted.
I had cherry blossom tree centre pieces and candelabras, lots of candles in the room everywhere (that was a mistake at the amount we had as it made the room very warm) and the whole room was dropped with white drapes, white carpet, white dance floor down from the beginning of the day with the wedding cake in the middle of the dance floor. It was really my best day ever!
Food and Drink
Our wedding package had a standard pick from 2 options for starter and main with one desert. We made sure that the options would have suited everyone and not just our own tastes. We actually took steak off the menu because it was impossible to make medium, rare or well done depending on 150 different peoples tastes. We had canapes for when the guests arrived and there was a good selection of meat and veg ones to suit everyone. As my husband is not from the UK our wedding was multi cultural so we also had a buffet that ran alongside the main meal of his home countries food to please everyone from his country who were coming.
As for drinks we had the standard half bottle of wine for everyone and lots of other drinks (coke, sprite, orange juice etc) and also the cultural drinks and non-alcoholic wines and beers. The tables were so full of drinks that hardly anyone had to go to the bar all night. We also had some money left over in our package and we used this towards a tab for the top table all night. We then also had an evening buffet and I think everyone really enjoyed that.
Child care company
I hired a child care company who specialise in weddings. They came and entertained the children in a separate area of the hotel to enjoy their own meal and fun and games. Once the evening reception started the kids were returned to their parents. All the parents loved and agreed to this prior to the day.
Things that made the day great
There was a lot of fun things that got everyone involved. We had a dance off between the Scottish people and the people from my husbands culture. We played the Mr and Mrs game and I think having the music on by the DJ all day made everyone so relaxed very early on. I think what made it work well was that the hotel staff were great at bringing out the food, making sure everyone was feed on time, drinks on the table. Like there was not a moment where someone had to say where is my food, I am hungry. We also had a video guest book as part of our videography package and people really enjoyed that.
What you want is enough food and drinks to keep people entertained. I think everyone loved my wedding so much because it was different from the norm. We danced into the reception instead of walking as they do this in my husbands culture and the music was very different as well. I thought about so many individual small things to make people think wow from the table names to the colours and coordination of the bridesmaid dresses, welcome bags etc.
The whole point was to make everyone attending feel very welcome and happy. I googled so much how to make wedding guests happy and what not to do at wedding that will annoy your guests. After a few weddings I realised that people hate waiting around between the ceremony and the reception so thats why we added on the canapes and gifted the welcome bags to try and ease that transition a bit. I think the music also helped a lot as well.
Any advice needed, please PM me.