Unreasonable Ask?

Is it unreasonable to not want your partner to go out to the bars if you aren’t able to go as well? For context, a friend of ours birthday is today and they were planning a family friendly cookout. I was really looking forward to it as a lot of our friends have kids around the same age and I like to take opportunities for our son to socialize. Apparently the friend has canceled the cookout and instead wants to go out to the bars. It’s obviously his birthday and his choice, however we are in a bind now as we do not have a babysitter. A lot of the other couples had grandparents or a sitter so that they can both go. I don’t drink, but I do enjoy the social aspect of getting out every once in a while, getting ready and dressing nice, etc because as a mom I don’t always get to do that. I didn’t straight say “you can’t go” but my partner could tell from my reaction that I wasn’t cool with it and now he’s upset about it. I’m really stuck here because I don’t know if my feelings are valid with this. For context, I only have 1 or 2 hobbies at most and schedule them around my son. My partner plays softball and basketball and even though he’s scaled back there’s been plenty of nights this summer I’ve sat at home while our son sleeps so he can enjoy friend time and his hobbies. Any thoughts are appreciated and I just don’t know if I’m in the wrong here.