You tried it at last!! It's a pity that you didn't enjoy it as much as you could have.
There are really no set rules on hot pot ingredients, whatever you fancy eating. And things will never be uncooked because if they're not done yet just throw it back in the pot for a few more minutes (maybe not good etiquette if you're friends but perfectly acceptable with family)
They should have given you a small laddle to hold the noodles, that way they won't swim in the hot pot.
I hope you have a better experience if you have a chance to try it again