I don’t know if this will be the trend across the board in terms of resort policy, but Riu Resorts seem to be cutting off hours here and there from check-in/out times.  For example, I stayed at Riu Palace :Peninsula several years ago and noticed that check-out time was 11 a.m., not 12 noon as is common at resorts in this part of Mexico.  I will be staying at the new Riu Palace Kukulkan in a couple of weeks and noticed from my travel docs that not only is check-out time at 11 a.m., but check-in time is 4 p.m.  That cuts off two potential hours you would normally have at this resort, plus you won’t get your room until after 4 p.m.  If anyone knows if this is now a Riu resort policy in general, please let us all know!