Remember it's yours and the person who you are marrying day.
The in laws, and the family can suck it up and deal with it. If they want things a certain way, they can get married and have the day they want. So that's what I would change, I wasn't involved in anything really apart from handing over cash.
Stalk the dj's. Like photographers, there's crap dj's who consist of a dodgy playlist. It was bad enough when it was bedroom wannabe's with their decks. Now anyone with a laptop can call themselves a dj as long as they have a playlist. And why, oh why do they all think we want to listen to agadoo and ymca. I was very clear, I wanted r'n'b, soul, reggae. Instead I got ymca, agadoo, abba, culture club, and other naff songs.
Photographer. The person who did mine was a family member who is talented. However, they are really odd which I didn't realise until afterwards. Was quickly shown them, never got given a copy and I have asked, countless times.