I've not been on this ship so can't comment on the inside cabin size. However on other ships, often an inside is the same size as an outside. nearly all cabins (execept for the very few single cabins) are designed for at least 2 people. As far as going ashore, I always do my own thing. It is extremely easy to do this in the caribbean as it is often just a short walk to the centre of the main town, from where the ship docks (unlike in Europe where city centres can be miles away). If you want to go further afield on some of the islands, there are usually plenty taxis to be had. Share with another couple and split the cost. The advantage of doing your own thing is that it is not only cheaper than ship's excursions but you can spend as much or as little time ashore as you want and go exactly where you want. If you are going to DIY, I'd strongly recommend doing a bit of research on your ports of call before you go, so that you have an idea of what it is you want to do/see, rather than waste time when you go ashore trying to find out what there is to do. One word of caution though, make sure you are back in plenty of time to the ship. if you are late back from a ship's excursion, they wait for you, if you are on you are on your own and late back, they sail without you.
I have been on OV and OV2, both times we booked in advance and both times we got upgraded, so you never know your luck!. On OV we booked a good inside and got upgraded to outside. This made us decide that we would always want an outside, there's something about being able to look out of the window and get natural light. On OV2 we booked a good outside and got upgraded to a balcony. I think this is unlikely to happen on OV though because she has so few balconies. We now love balconies and have booked a one for a cruise later in the year on P&O's Ventura. But be warned, you should not bank on this happening.
Regarding trips I would agree with Johnstone, do your research. We cruised the Caribbean in May and did 2 trips and the rest on our own. We will be doing the same on Ventura. Generally in the Caribbean you dock right in the middle of the main town and can easily pick up a taxi or explore on foot. Check each port on the web and you will be able to find out exactly where the ship docks. Hope you enjoy yourselves OV represents very good value for money.
If I was going to be in the Caribbean I would always opt for an outside cabin and preferably a balcony. I know some people say they spend little time in their cabin but when you are in there seeing a beautiful sunrise or sunset is part of the joy of the Caribbean even just talking to your next door neighbour, sort of over the garden fence, can be a delight too. If cash is the over-riding factor then get an inside rather than not go and yes there will be plenty of room for swinging a full size moggie. If you look at the tourist information on the net and combine the knowledge of that with where the ship's tours take people you will be able to work out your own trips and do them a great deal cheaper particularly if you can pal up with another couple. To get the most out you must do the homework...Good luck....Nei.
The standard inside cabins on these two ships are generally the same size as the outside ones. Compared with some other ships I have been on (e.g Oriana, Oceana, Star Princess) they are also on the larger size and certainly ok for two. The advice already given regarding tours is spot on. If you are in port for a whole day I would suggest doing an independent tour in the morning so as to give you plenty of time to get back should you be delayed. It depends which port you are in. I may think twice about doing my own thing in, say, Cartagena and a tour would get you around a lot of places with little hassle. Do your research and have a great holiday. I've seen plenty of passengers on the dockside watching the ship sail away without them!
I have done excursions with Ocean Village and always found them to be great -there is always a good selection. The problem is - if for any reason the excursion doesnt get back to the ship on time -if you are with an Ocean Village excursion - they take full responsiblity and you dont incur charges BUT if you do it with an external company and there are delays the charges can add up.
Personally though it is quite easy to get a taxi to the beach or just go for a little wander round in the port and then enjoy the ship with fewer passengers!! On Ocean Village 2 I loved sitting up in the spa when we were in port because it had the best views and was very relaxing.