Belize city to playa del carmen ADO day time bus service.

Information on the overnight service is plentiful and accurate.
I am having difficulty getting information on daytime travel from belize city to playa to catch the hourly service direct
to cancun airport.   flights to Europe usually leave later in the day, and I would like to travel up  the same day..
the ADO inline info is incomplete, can any one offer advice or information.

The reason you are having difficulty is because, as far as I know ( which could be wrong ) there are no day time bus trips via ADO from Belize City to Playa.  There are many ADO runs from Chetumal to Playa but that means you have to get to Chetumal.