According to OP's definition I am probably a funsucker.
I don't like weddings much although I will go and will be fine once I am there. I'll enjoy chatting to people I haven't seen in a while. The next wedding I'll be going to will be in a year's time. I'm working up to it and it will be fine.
I never really enjoyed going out on social events with work and was delighted when my children were born, giving me the ever useful "no babysitter" excuse not to go.
Football? It's OK. I'll watch some of the major matches with DH at home and eye roll/laugh at him when he shrieks loudly enough to make anyone think the match is happening in our kitchen or living room!!
Day trips - depends where to and who with. I love the odd trip to London to do something like visit theatre or museums with DH and the DDs. I wouldn't just go on one for the sake of going out though. If I don't like what's on offer I prefer to stay at home.
I will answer the door. I don't mind people coming round although not many do as we don't live near family. I wouldn't answer it late at night though unless I knew who it was likely to be and had been notified. I think that's pretty normal.
Someone mentioned cruises. My feelings are mixed there. I wouldn't want to have to dress up for dinner each night and I am not big on some of the other entertainment on offer. If I could dress casually (jeans, shorts and t-shirt) and be just left to my own devices then I would probably be fine. Bad weather at sea would also scare me and I would feel trapped in it if it struck.
I don't impose my own likes and dislikes on others. I'm doing nobody any harm and just want to be left alone to read my book or whatever else I might be doing.
We are all different and that is part of what makes life interesting.