I just wanted to chime in to say that my family was on the ten day sailing on the Fantasy and visited
Lookout Cay on Friday. My impression of the island is overall quite positive. I also believe it will be better in the future as the plant life grows in and the pier is improved through shade/decoration to make it more inviting.
We were able to walk the pier in eleven minutes. This was my wife, myself and our children ages 15 and 8. We are all able bodied people and this was at a normal walking pace, not rushing, but not strolling slowly either. The pier is long. This has been established, but it didn't take long to traverse and perhaps looks longer than it feels. My biggest complaints about the pier were largely aesthetic. It's gray and rather uninviting. The day we visited was overcast and windy, so we didn't endure extreme heat on the walk. Some shade would make a big difference on sunny days, as would some color to liven things up. The tram ride to the beach is fairly short and not much of an issue. It is longer than the tram on CC to the first stop, but comparable to the ride to Serenity Bay.
I will say that on the walk back at the end of the day, after it had rained, the pier was somewhat slippery which was surprising. I was barefoot for the first half of the pier, and slipped slightly a couple of times. Not enough to fall down, but enough that I rinsed my feet and sandals off and put them on at the midway point. It could use a little texture. We saw quite a few folks riding golf carts both on the way to and returning from the island.
The food was good, very similar to Castaway, perhaps a little better. Burgers, fries, rotisserie chicken, rice, fish, potato salad were all tasty. My wife purchased a small cooler bag and some seltzers for around $40. My kids and I had smoothies which were good. Ice cream and drinks were easily accessible.
We visited the merchandise shops and were able to purchase a few shirts with LC graphics. The shops were crazy busy, but this was not unexpected on a new destination where most people had not visited before.
The biggest difference between LC and Castaway for us was the beach. Lookout Cay has very soft sand and beautiful clear water. There is really no comparison to CC, which we visited the following day. I find the plants underfoot in the water at CC to be disconcerting and not enjoyable. I have been fortunate enough to visit some amazing beaches on our vacations (Hawaii, Jamaica, Grand Cayman, Mexico, several Caribbean islands) and LC ranks among the very best in terms of the softest sand and nicest water. We went out perhaps 60 feet from shore on the family beach and the sand remained soft as ever and not a single rough rock or plant to be found.
The Rush Out water play area looked great and was not super crowded on our visit. My youngest decided not to go as she was having a great time in the ocean. We did not visit the cultural center or watch the Junkanoo show except from a distance as our priority was really checking out the beach and the shops. Our snorkeling excursion was cancelled (as were nearly all others) due to the high winds and weather. This was also the case the following day on CC - no parasailing or glass bottom boat ride. There were a lot more waves at LC since it is not as protected as the CC beach. Late in the afternoon when we were about ready to head back to the ship, the rains rolled in and there was a mad dash from the beach to the trams. Even with the mass of humanity all trying to leave at once, the trams were able to handle the influx and we were back on board in about 20ish minutes.
My takeaway is that the beach is several orders of magnitude nicer at LC than CC, and that as shade and amenities/services are added, I will likely vastly prefer LC as the better of the two Disney stops. Honestly, I think it will make sense for itineraries to prioritize stopping at CC first and then LC to leave guests with the more positive impression.
For anyone who has not yet visited Lookout and has been concerned over the pier or the lack of shade, I urge you to keep an open mind. If you feel you will need a ride, ask for one. Be prepared with hats, sunscreen, umbrellas, whatever it takes to mitigate the lack of shade. in my opinion, the beach experience is worth any of the small inconveniences necessary to get there.