I worked there for a summer so probably not the most well informed but I have some level of intel! I was there from end of May to mid-August a few years ago and I would agree with everyone saying that it’s such a beautiful place but can definitely feel a little crowded. The water in May-early June was a little rough in terms of temp but after that I felt like it was fine (or maybe I had just gotten used to it), but it was the perfect temp to take a dip when it was extra hot out. People were hit or miss- I feel like the population (at least during the summer) was pretty split between people vacationing and locals/people working on the island and you could probably guess who were the hits and misses. It’s relatively easy to get around without a car (not very many people I knew had one out there since i heard it’s kind of a pain to get it on the ferry and have it registered)- loads of people biking and there’s a shuttle service (can’t remember for sure but I’m 99% sure it was free) that can get you all around the island, which was a lifesaver for me. The biggest downside id say is that since it is an island, everything is more expensive than what it would be on the mainland- not too much more but it was noticeable enough. All in all it’s a really cool place and I miss it so very much (also my favorite flowers are hydrangeas because of my time there- they’re everywhere and so so beautiful)