I have to go for the whole weekend. It is important to DH. The groom is one of DH's best friends and was a witness at our wedding.
Also, DH got upset because at first he and I weren't invited to the registry wedding - which the bride said is not a real wedding and is called a "registration of marriage", rather than a wedding, on the invitation - so they invited us because DH complained.
The wedding is on Saturday and the barbecue/sports day is on Sunday, which is my birthday. We are staying in a camper van, so previously I had asked DH if we could go somewhere else on Sunday for my birthday, and he said no, we have to stay for the whole weekend. (We had to rent the camper van for the whole week, so we get to spend the rest of the week doing stuff for my birthday, so it's not so bad.)
DH is usually very agreeable, so this is very important to him.
Another thing is that some of the people have paid to stay in a barn on the campsite. According to the brochure, the barn has bunkbeds. Now, the couple are telling the people that if you are sleeping in the barn, you have to bring a sleeping bag. If I had thought I had paid for a bed and then was told I was sleeping on the floor in a sleeping bag, I would be very pissed off.
This evening, I asked DH what he thought I should wear, and he said “Wear what you want.” So I said, “when you saw me trying on a dress, you said it looks like something ___ would wear to the pub.” And he said, “I don’t care what you wear; you’re the one who’s going to be embarrassed.”
I will not be embarrassed.
So I will be wearing my simple little button down dress and a pair of flats. They’re lucky that I don’t go in jeans.