I wouldn't chance this on a cruise, unless you do a private car and those small 'tours' are very expensive. I would, however, consider whatever ship excursions are offered. They rely on the relationship with the ship and need to make sure you get back in time.

I took about 8 hours total from the departure at Catalunya place and back.

Hello. If he can walk with a cane, it would be ok. There are 3 stories at the museum and the corridors are pretty narrow. There is about 100 meters to walk from the parking lot to Dalì's house in Port Lligat on the rocky beach.

We had about an hour or more for lunch on our own in Port Lligat. We opted for the deck of a beach side venue with amazing views and delicious calimari. A few people skipped the after lunch visit to Cadaques to stay in Port Lligat, and the mini bus stopped on the way back to Barcelona to pick them up.

La excursión salió desde un local enfrente del Palau de la Musica. De ahi caminando 2 cuadras hasta poder tomar el bus. Salimos 8.30 y regresamos alrededor de las 19 horas. La excursión es en inglés. No conseguimos en español, pero se entendía y el guía, que era ecuatoriano, se esforzó para que las 4 personas que no éramos anglo parlantes no quedáramos afuera de las explicaciones. Pero igual aclaran que no es una excursión bilingue.

No. After you leave Figueres, and before you get to Cadaques I think,the guide asks who wants to go in the house at portllegat then they reserve places and you pay them. They pick up the tickets and a guide from the house takes you round. However, it all changes in June I think as they go to the house he built for Gala instead.

I booked a viator bus tour and the coastal house was on the tour but at an additional cost after the museum in Figueres. The tour guide calls the house with a head count, you need to have cash (for us it was €12 per person) and they let you in as a group at an exact appointed time. If I had the choice to do this again, I would not do it, the docents of the house were rigid and bordering on unkind. Dont try to take a purse with you either. Cell phone or camera seems to be okay.