Reminds me of an episode of Digimon where Joe (I think) says something like "I don't like eating on an empty stomach." But I think that was supposed to be an obviously bad excuse for not eating something he didn't want to try rather than serious statement, but I was never certain...
I don't think any clothing or no clothing is inappropriate around children. It's stupid that some people have an issue with that kind of thing. Also "think about the optics" seems like concern trolling. So... Basically would just be worried about safety, laws, and how it would affect socializing with people you want to socialize with. Seems like something a lot of people with bad opinions would think is inappropriate, but bad opinions have no shortage.
Never been to a pride event. Have you been to this event in previous years (assuming it's an annual thing)? If you're not sure, could you just prepare for the option of that and decide after you arrive?