From what I can remember, I don't think any of them were over �100 - more like �50 for a full day, including a fab lunch at a posh hotel - we wouldn't have been able to afford that! Generally speaking, any ship will move heaven and earth to make sure anyone who wants to go on a trip can go, as it is all revenue for them. If you are very keen to go some particular place, my advice would be look at the excursions and book as soon as you possibly can once on board. They sometimes also run a waiting list, if trips are really full and we have got on a popular trip that way in the past. Some folks on board just want to sunbathe, never seen the whole boat empty. Usually, there is more than one trip leaving each day, so I wouldn't fret too much. If funds really are tight, you can pay your on board account by credit card and then pay the balance off over a couple of months once home.