Doridee

The smaller boats that take you into the Blue Grotto hold four passengers, two on each end with the gondolier in the middle.. When the tide is high, you become very close to the person sitting on your end of the boat. Going into the grotto, all passengers fold from the waist down with their head resting on their knees. Returning from the grotto, we had to lay back with our heads resting on the person sitting behind us. If you go at lower tides, this should not be a problem. My husband who is 6'2'decided to skip the grotto and wait for our group to return. A lady who has claustrophobia did the same. I have a touch of claustrophobia, but pushed through the anxiety and was thrilled with the experience.

When we went to Naples/Capri with a tour out of Rome, we took the ferry which let us disembark near the speed boats that took us to smaller four seater boats which took us into the grotto. The grotto is an unforgetable experience. I would look on Capri and Naples tour sites to see if they offer tours like you want because I saw many people in swimwear going on different speed boats as ours left. I assumed they were doing beach and snorkeling tours.