Thank you all so much for your kind and useful comments. I should probably have mentioned that I am an older, female, slightly disabled solo traveler, so am somewhat restricted in my modes of transport! Sadly, island hopping in the way iancal has suggested is a non starter. I have already researched Celestyal, but the ship is very old and was evidently burnt out at one point!! I love their itinerary but again, as a solo female traveller, I’m not sure they are suitable for me! I think I may have to go for a bigger ship as my budget is somewhat restricted. All your suggestions are very helpful and as a result, I am hopeful of finding a cruise that will fit my needs without having to research every single cruise line!! Please keep your suggestions coming. Thanks.