In the sentence "introduce the guests, with you will be sharing the ideas for the fundraiser."
would i use who, whom, whoever, or whomever in the blank and why?

"get off of your lazy bum and come running with me or i'm dumping this pitcher of water on u " u say with a smile. she thinks your joking so she ignores you about 10 seconds later shes screaming wile water is dripping everywhere you say "here comes the second one! " then you here her say okay, your such a j e r k ! ill be ready in 5 put the pitcher down " she say in an angry tone. and you smile in victory

good enough?

greet them:

buenas noches.

that is considered night time which is when "good night" is used.