We came as a group of 1600 people, planned over a ...

We came as a group of 1600 people, planned over a year in advance. Rooms weren't ready upon a 3pm arrival. Our assigned room still wasn't available at 5:30. We asked the front desk what options we had, at that point they gave the option of the other tower. The man at the key counter was extremely rude. When I asked if this is a usual thing to happen (not have rooms ready), he asked if I knew how long it takes to clean 2000 rooms and that they often don't have people's rooms clean at their check in time. If you want a place to actually stay try another hotel.