We have half a plan to take a boat trip to one or both of the above islands one day next week. Looking at the ferry schedules, it looks like it isn't possible to go to either and spend more than 2-2.5 hours there without staying overnight - is that right? In which case it might be easier and better to go for a tourist boat trip to both islands, even though the time on each may be less.
So, please can anyone say what boat trips are currently on offer, the approximate costs, do they all go to both islands, and how long do they give at each port?
Finally, I've heard about the Mamma Mia trip, where does that go, and for how long, and is it likely to be remotely interesting for anyone not interested in the film? (sorry!)