If you want to upgrade to all-inclusive you will have to call thomson very quickly. We tried to book it 3 weeks before our sailing and we were too late. No-one at all was sea sick when we were on board, the Red Sea seems to be very calm.
We've cruised the Red Sea three times in February and November and it was never rough...perhaps a gentle swell on occasions but nothing more than that....as for the all inclusive...it might be worth giving Thomson a ring as I'm not sure you can do it once on the ship...I had a feeling it has to be booked prior to going....we had it as a special offer but I think it is a fairly good deal even if you have to pay.
I tried to book the drinks package but was told that as it was only 2 week to departure I would not be able to do this.
Don't believe them when they say you can book it when you get on board - you can't!
No one was sea sick when we were on the Celebration in December 07.