Not so much one thing but...
What do YOU want? Small wedding? Elope quietly? Massive bash? Don't let anyone force their idea of what a wedding should be onto you. Fund it yourself if family are using money as a bargaining chip.
How much do you want to spend? You can get hitched on a budget, if you are canny.
Weddings are a nightmare for extraneous crap - I had someone have a go at me for not having chair covers. Bugger that...all you really need is good company, then feed and water them in a niceish venue. we had nothing like favours etc - v simple flowers, and plenty of good food and drink. Dresses can be had off the web pretty cheap. Don't get sucked into dress hell, or wedding colour hell, or stationery hell, or matchy matchy bridesmaid hell. Or any of the other stuff that's not important at all. Think if you'll remember it in twenty years - so you'll still be wearing your ring, you'll still remember the ceremony and the honeymoon but you won't give a toss about the lack of chair covers....
We did the following; 80 ish folk, incredible venue ( huge old building and botanical gardens for a couple of hundred quid, because it was a university building.) no fuss, ten minute secular ceremony followed by fizz outside. Wander down to dinner venue, no big gap between wedding and dinner! Do your photos first! eat, speeches, booze, dancing, fun. Couple of bridesmaids told to wear whatever they felt comfy in.
People are still telling us it was one of the most chilled, fun weddings they've been to.
So anyway, do what you want within your budget. We blew most of ours on an absolutely fucking incredible honeymoon to Tahiti and we've never regretted it. I'd also say your wedding rings will be something you wear everyday so pick carefully.
Congratulations!