Having worked in hotels for many years (I'm actually at work right now at the front desk.. I live here.. my TC is outside in the back of the lot and I'm renovating it here. But this is a special circumstance), I can tell you that this is really a hit or miss situation and will depend on a number of factors.
1. Parking. If the lot is big enough, it shouldn't be a problem. Also, make sure it's not a covered lot where you could damage your camper. 2. Occupancy. If it's the height of summer and the parking lot is full and guests are everywhere, it's not happening. If it's the middle of the week and a quiet night, I'll allow it. 3. Personnel. Depending on who you talk to, you'll get a different answer. I'm obviously welcoming of campers and RVs but if you were to call and ask while my coworker was working, he would say no. If you have a TC and your footprint is not much bigger than your average truck, then I wouldn't even say anything and just go for it. If you're towing a trailer or 5er, best to call and check the parking situation. A nice attitude can go a long way.