I too travel solo on the majority of my trips. I love these trips because I can sleep when I get home. I do Rope Drop to Fireworks. No one else I know can keep up with me on my trips. When I schedule trips with any of my family, I always do RD, nap, then evening to beat the eat. I don’t nap, so I just lay out by the pool.
I love planning my dining, but since you don’t want to plan make sure you do not eat lunch between 11:30 - 1:00, or dinner between 5 -7. My favorites with no ADR: MK - Pecos Bill, and Pinocchio Village Haus (flatbread kid’s meal); EPWS - Kringla Bakeri, in Norway, Les Halles in France, Yorkshire Fish Shop in UK; EPFW - Sunshine Seasons in the Land. AK you will love Nomad Lounge!; HS, my personal favorite that I never miss is 50’s Prime Time. If you can’t find the time to sit down, there is the Tune-In lounge which serves their food, but it is REALLY crowded in there. At Poly, I have always been able to get into the Kona Café without ADR. If you do go to Bluezoo, remember to take your credit card, they don’t do Disney payments. Also, between EP and HW is the BoardWalk Bakery. Love this place!!!
I see Disney After Hours in your plan. Make sure you grab water or any drink whenever you see a cart. There are only a few stations open. I think maybe one in each land. There is no limit, so a backpack really comes in handy. I take a ziplock and get extra popcorn for snacking later since you’ll get back to your room late. This way you can eat (at least) one each of the ice creams available.
I’m sure you know by now, if you have a FP for FOP, DO NOT GIVE IT UP. If you don’t have FP, rope drop is for you without a doubt.
Just like everyone here, these are just my favorites.
The one thing I regret having never done and plan on doing whenever I get to return, is getting my picture done at Momento Mori. I always forget until the end of the day and they’ve already stopped taking pictures.
I also keep a small, light umbrella with me for both quick showers and shade (especially at Epcot).
I know you will have a wonderful time. Make sure you look up, down, and all around where ever you are, and you’ll see something that you never realized was there before.