We used ME last year and are doing so again next month!
We used the yellow tags that they send you to put on your luggage, we then had to collect our bags from the first carousel at MCO but then didn't claim them from the second carousel. The bags were then delivered direct to our hotel room a few hours later!
We found it to be a very good service, on the way home you have to take your luggage with you, some people say they get you to the airport too early but we like that!
Oh one tip, last year our bags took ages and with the jetlag we wanted to go to sleep so this year we're going to pack 1 small suitcase with all our over night and next day stuff in, we won't put the ME yellow sticker on that bag and will take it onto the bus with us. We'll then tell bell service to bring our bags up the next morning