When we got married, I was organising a lot of work events and took the lessons learned from that into planning our wedding.
Top of the list to to make sure that your guests are comfortable. We went straight from the ceremony into pre-reception drinks on the terrace.
The various group photos were done within sight of the party, and cumulated in a group photo arranged on the stairs between the terrace and the lawn.
I have been to too many events, including weddings, where nothing was served until the two hour photo session was complete. One wedding, there were plates of sandwiches and water marked 'for the children' while we hung around for two hours ... without so much as a glass of water.
Everything on the one site, plenty of parking and no need for further travel once you get there.
If you are having live music in the evening , make sure there are also some quiet areas where people can sit and talk.
It's not much fun when drink runs out. We had a drinks package to go with the food, but gave instructions to keep pouring the drinks and we would cover had additional cost. We were surprised by how abstemious our guests were. The additional cost of free wine/beer.soft drinks all night was £300 at hotel prices.
If you get the hospitality and catering right, it doesn't much matter what else happens. Do try and enjoy the day.
Now DH's only stipulation was that we have a professional photographer. I would have been happy with no pictures. I'm so glad we did. They did a reportage style, unobtrusively taking pictures all day. Great to look back on, lots of lovely moments I would have missed without the pictures. They captured every group arriving, daytime and evening plus lots of candid shots.
When we invited people to 'see the photos' I made up a pack to show each group themselves arriving in best outfits, then the group photo snd and candid ones of themselves. Very much more fun than endless pics of TVs bride and groom.
In summary, look after your guests, do what you want. Take time to enjoy.