Spending money on simchas – that is something that Rabbanim have addressed; it sets standards that are increasingly difficult to follow. Spending money on food? I don’t see why that would hit the list at all, never mind the top.
But hotels for Pesach? This doesn’t set standards, for dozens of people will be proud to announce they don’t want to go away for Pesach; they ENJOY making Pesach at home, etc. etc. It isn’t embarrassing in any way not to be in a hotel for Pesach.
What could be wrong with it enough to ban? And what does it have to do with your ‘rabbis’ food and simchas? Surely they are a different problem?