When it comes to Pesach hotels, this is such a touchy topic. The costs are so high that people try to nickel and dime even by squeezing as many kids into one room as they possibly can even against hotel and fire code regulations. The Group NEVER tells the guests that tipping is mandatory and they would never include it int he bill because they want to look like they are reasonably priced. THIS is the biggest chilul Hashem since it is they who are the biggest perpetrators of the scam. PEOPLE in general are NOT aware that hotel staff are NOT paid a wage and are reliant on the tips they make. The groups that run these programs should be obligated by law and by halacha to tell their guests or include it in the bill to avoid making a chilul Hashem. I think Kashrus organizations should discuss this and include this item in their contract when giving a hechsher on these hotels. They are the only ones that can control this issue because they are the only ones that have any control what-so-ever over the Pesach programs.
They should insist that each contract either has the tips included in the bill or a line that says that TIPS are mandatory and not optional. And that includes TIPS to the counselors who are not getting paid much either.