Cruise flight - EDI - SOU with RCCL

[Lotus Girl]

We have booked the ship flights from Edinburgh to Southampton for our next Indy cruise. Flight is 7.00 am so we will be in Southampton airport quite early. As the ship provide the transfer to the port, can anyone tell me how long we are likely to have to wait to be transferred and do they transfer you "en-masse" or do they run a bus every 30 mins or so? Similarly the return flight is 9.00 am from SOU so do they transport a pile of people back to the airport at the one time? We have no issues hanging around the airport and have done this twice this year so far when sailing Indy but that was due to booking our own flights with Flybe and then paying for our own transfers.