Nothing can compare to the home experience. There are also other problems with hotels besides kashrus (the recent innocent mistake at the schwarma place just re-inforces the kashrus issues). There are also breaches in tznius when strange families end up sitting together. One factor is that some Pesach books have pushed unnecessary chumros in Pesach cleaning, making Pesach cleaning seem impossible. Plus, many people confuse Pesach cleaning for sporing cleaning, making it a daunting task. Perhaps if the Rabbonim could let everyone know that there is no need for excessive cleaning, people won’t feel as overwhelmed.
Rosh Hashana hotels are even wackier than Pesach hotels. Tekiah! Teruah! Tea room! Who’s going to live? Who’s going to die? Who’s going to tea room?