You can catch the ferry over to Fuerteventura from Playa Blanca but I don't know how much it is.
There are a couple places in town that you can book excursions with but we never went on any so can't really comment.
From memory I think the courtsey bus went about 10.30am, 12.30pm 2.30pm and 4.00pm , I don't think went any later but a taxi was only about 3 euros and really easy to get.
The marina was about 15 mins walk plenty of bars there, and then another 25 or 30 mins in to town.
There was a block of shops just below the hotel but I'm not sure if there was a bar.
We were there in Nov and one of the pools was heated