Complain to the hotel management. Doubt much will happen but it better than nothing.

This is my 21st year of teaching in public schools. And, like somebody wrote above, one big problem is parents trying to be buddies with their kids, rather than parents to their kids. Their kid gets a bad grade and they (the parent/parents) go on the offense and 'attack' the teacher rather than their own kid. . . In a lot of homes the kids run the show and they are not accountable to anyone, about anything. Sad deal. TV/X-BOX, Nitendo/Fast Food-Super-Size Me generation. . .

Yes, we still have some great parents and some great kids. But, not near as many as we used to.