Need easy meal idea for about 30?

I agree with the hot dog suggestion. You can place them in your crockpot and let them cook for a while at home, then just take it with you and plug it in to keep them cooking. Trying to feed kids and adults is difficult, but most everyone likes hot dogs! Take some chips and dip and maybe another crock pot with baked beans and you're set. You could also make up a veggie tray as a "side." Everyone likes that.