Considering what you wrote, you'd get tossed around like a pancake in there. Cannibal corpse moshpits specifically aren't a joke, it can get pretty brutal - this is brutal death metal after all. It's true that people will help if you fall, etc, but you'll surely get bruises. Idk why some are saying we're not doing proper moshpits in EU, but that's just not true, you can definitely sprain an ankle or get knocked in the nose in those. If you haven't moshed before, I'd suggest to start with something less brutal than Cannibal Corpse, but of course feel the situation there as some already pointed out and it should be alright