We are going to Greece in July and have already booked and paid for our accomodations. Now I am looking at prebooking ferries on all the Greek Ferry websites. All the travel books I have read, say there are daily ferries betweeen Santorini and Crete, Crete and Naxos. Now when I look there seem to be none or only 1 that is already full. Does anyone know if there are more ferries that go daily between those islands? We were there 8 years ago and had no problems but this time we are traveling with 2 small children so I would like to know now if we may encounter problems!
There should be multiple ferries on that route, but maybe only one or two per day per Ferry Company. You could maybe try to find an agency to book them for you, they may have a better schedule. Otherwise, upon arrival, I would book all ferries at your first stop.
There are daily ferry connections between Santorini & Crete. Since Naxos is only an hour ferry ride to Santorini...I'm thinking you shouldn't have much trouble.
There isn't usually a ferry from Naxos to Crete - you have to get to Santorini first. This shouldn't be an issue though. During July there are several daily ferries to Santorini from Naxos. Enjoy!
There are a few options between Santorini and Crete, and one between Naxos and Crete. As already mentioned you can get to Naxos easily from Santorini. Few ferry companies operate every day on this route. Hellenic Seaways and Seajets are the most frequent, and G.A. Ferries and Lane Lines both go twice a week but the departure times can be very inconvenient if your're going from Santorini to Crete instead of Crete to Santorini.
Go to http://www.openseas.gr/OPENSEAS/index_en.vm to see what's available on your travel dates.