I never could understand why people crash weddings. Being at a reception where you don't know the bride or groom is kinda pointless. It's really boring to listen to speeches about people you're not related to or friends with in any way. Unless you're a supermodel or a local celebrity, no will talk to you except for your date if you brought one (though it's probably harder to crash a wedding as a couple). And because of the Me Too movement, a lot of men are too scared to approach women they don't know, even if it's just for a dance. No one will introduce you to other people because nobody knows who you are or why you're even there.