My family did the sunset kayaking with Irish Adventures during our visit to Dingle in June. Everyone enjoyed it - Our four kids are 15,16,18,21 (2 boys, 2 girls). We saw Fungi the local Dolphin and "backed in" a cave briefly. Not too much cave exploration for us, but I'm sure it is dependent on time of day, tide, etc. They offer a day tour too. I would probably do that instead as when we finished the evening tour it was after 10 pm and not enough time to dry off and enjoy some time in the pubs.
We enjoyed a great dinner at Ashe's. Probably our most expensive meal during our 12 day trip, but food was excellent - mussels, crab legs, lamb, steak. We enjoyed music by the Blow-Ins at Paudie's Bar after dinner that night. Great duo - think they play there quite often.
We did not make it to the Aran Islands or Skelling Michael. I know my kids would have liked to take the trip to Skelling and make the climb. Just too much to tackle in one trip! Think the Star Wars filming is over. They actually recreated the setting on a mountain in Dingle I believe and just finished filming the week before we were there. I think filming at Skelling became too difficult perhaps.
Other trip highlights:
Hiking the Gap of Dunloe - I would consider this a must do if you are in Killarney. Just beautiful! If you don't like to hike, you can take a jaunting car ride.
Hired a driver to take us on tour of Dingle Peninsula and Conor's pass. Gave my husband a nice break from driving.
Hawk Walk at Ashford Castle - we didn't splurge to stay here, but stopped on our way to the Connemara area to do the hawk walk. Kids love it.
Enjoy Ireland! I'm ready to return and have only been home two weeks!