Why do p and o let you see prices for prebooking but only allow you to see location I.e.aft ,mid aft, etc and not see cabin no .Why would I pre book via p and o .I know if I book via my TA I can give her say 6 cabin numbers in order of preference and she will come up trumps 99% of the time .so for example if I want a mid aft cabin I cannot even state deck position so why would I use P and O site?----q