Ok, so this is probably going to sound like a rant because it is one. But my 21st birthday is coming up... In like 4 months. And well I started to think of plans. I talked to my family about a few ideas of things to do and such. Afterwards my family invites my cousin's and their 3 year old baby that live across the country to visit and they all want to go to Universal for that day, and everyone wants to spend a day playing with the baby at the park. I don't particularly love Universal a whole lot, I've been plenty of times and we'll, going to a theme park with a 3 year old baby just doesn't sound like my definition of a fun day. I bring up the fact that that's my birthday and I was hoping to do something to kind of well celebrate me. They of course had forgotten that weekend is my birthday. I bring up some ideas that maybe we can do at night, they bring up that they'll probably be tired that day and well they shoot most of my ideas down since they're not "baby appropriate" and they are taking a vacation for the baby. Well shit, now I feel like a selfish asshole because I wanted the day to be about me instead of about this baby. I'm not particularly close to these cousins, personally I find them a little annoying so the idea that I have to spend the day with them already I'm not thrilled. But the rest of my family is close with them. Of course, I could always try to celebrate my birthday the weekend after instead of on the actual day. But because my birthday lands on a Saturday, and well 21 feels like a big deal to me, also I won't have as much money the next weekend to spend if I go to Universal. I wanted to do something special. I also could ditch my family and just hang out with friends that day, but that also feels like it'd be selfish and I know they are expecting that I go to Universal with them. The last idea of course is to do something after the parks, but I know everyone will be very tired by then and may not want to go do another big activity after spending all day at the parks. Also Universal tickets are kind of expensive, I can afford the ticket, but spending $120 on the ticket will obviously cut out of any kind of money I was planning on spending at a nice restaurant or bar like I was hoping to for my birthday. I feel stupid for being jealous of a baby taking the attention away from me. And I know it's probably not super healthy. It's been a few years since I really did anything for my birthday and 21 feels like a "landmark" year that I should go out and celebrate. Should I suck it up and go to Universal and make the most of it and have fun, or try to make other plans?

Tldr: family and 3 year old baby make plans that happen to fall on my birthday, I was hoping to do something different that day. Feel conflicted if I should just "roll with it" and not make a fuss about it or go celebrate my own way.