Hi there Mary,
regarding your onward travel plans from QE2 to London though the ship is advertised to be in around 7am you may find she is docked before that, disembarking will start around 2 hours from docking and will be announced over the tannoy by deck numbers (this is of course only a guide line and you are free to de bark whenever you so wish,not many people know this!) there is always the usual rush when they announce the deck number so be warned!! If you are travelling and you can carry ALL your luggage off in one go you can get your boarding pass stamped self help at the pursers office (2 deck) nd you can walk off much sooner if you like??
having cleared custom is there are any there, you will find a line of taxies waitingto take you to Southampton Central St. Most people there will be going so you may get asked if you want to share,or even ask somebody. the journey to Waterloo Station (not victoria as your agent says) will only take about an 1 1\2 (try and get an express train, less stops) and you will arrive in Waterloo station. if you travel after 9am the train fare is slightly cheaper.
hope this is of some help? Rest assured QE2 is big enough that you will meet a diverse range of passengers from all walks of life, and lm sure you will have a wonderful crossing onboard, so just relax,unwind and leave it all behind and have yourself a high old time !!!
Bon Voyage ,
Myles