My DD, now 23, and myself, used to always stay at CBR and get there on a Thu, maybe a Fri, and in the evening sometime. We'd go shop at the main gift shop there(forgot the name), and would eat burgers at the food court(they used to be really good, lol!). I liked getting settled and starting our vacay a little low key, ready to start the next day. Never RD, though, always went over in the afternoon.
But now, we like to take a very early flight on a Sat, we stay a week and leave late on Sunday. Though we are not early morning people at all, we like to leave like 7:30 - 8:30 a.m. so we can have another whole park day - we can have 8 whole days instead of 7 that way! We get into MCO about 11 - noon, usually can get in our room early, so go for a short time(or we'd collapse and never get out, lol!) then get out to our lunch ressie and park, where we hang out at the park till close! We usually start at either MK or Dhs, depending on where we want to go on Sunday night(party or not), and the hours of those parks, even though MK is my fav park.