Don't think twice

RockAllNight, that's 30 minutes per girl. My total time in Tijuana is more like 4 hours. A guy has to rest a little.

Mostly not. But they ask you to put yours on before entering. Then you take it off as soon as you sit down or keep it on if you prefer.

NO. They do not enter your room unless asked. However the hotel staff is usually hanging around in the corridors, sometimes asking if you need more towels or such. It is possible for a tip that they would agree to remake the bed but likely they would not replace the bedding with clean unless that was part of the deal.