I avoid crowds and crowded places when possible, and when I have to deal with it, I am lucky enough to seem to be OK. Honestly, even if I go someplace I really like to go, and there's a really good reason for me to go there on a particular time, I might change my mind and not go after all, if I find a big crowd.
There are exceptions: Once a year, I drive up to Reno, NV to attend the world's largest vintage car show (Hot August Nights). I think I read that about 250,000 people go there from all over the world for that week. I stay two nights, and deal with crowds that are unbelievable. I think what keeps me happy and comfortable, is that I know I chose to go there, and I can leave any event whenever I please, and despite the crowds, the flat desert landscape somehow feels less confining than a downtown city. I try to stay alone; I seldom get into any conversations with anyone. I can if I need to, of course, but I prefer to just do my own thing. Additionally, so many foreigners and members of all cultures from all parts of the USA, come together there. So nobody would appear as "weird", if they're acting differently, whereas in a daily bustle of a busy downtown, the odd one stands out. And another aspect of that event, which makes it easier for me as an Aspie, is that there are many other people who go alone, so being alone is not at all peculiar. Unlike the beach, for instance, where people nearly always go in groups, and thus the beach population is groups of groups, and a loner is kind of weird to see.
Charles