I too went solo many times this past year to utilize my AP. I too suggest you head on over to the Solo Threads.
I just stayed at Values, took
MDE, & let Disney do all the driving. I brought & bought food to eat in my room for all breakfasts & some lunches/dinners. I took meals into the parks. I made a few special ADR's (did old favs & tried some new places), took resort holiday display tour, & booked a dessert party for my birthday.
My favorite part of WDW solo is not asking anyone else's opinion of what they'd like to ride first, when to take bathroom breaks, where or when to eat, when should we head back to room, last minute decision to shut off alarm & sleep in, etc. etc. I was able to use single rider lines & that freed up FP for other headliners. Getting & modifying FP for 1 to the exact time you want is possible every day.
My least fav part of WDW solo was TL has some rides they won't allow singles to ride but I was able to find other singles willing to pair up. No one ever brings you lunch or a drink, you have to get it yourself. You can't save a table & pick up your food, one time I had to request a seat at a table with another family, as there was no open spaces. Some ADRs sat me at less than desirable location 2 tops.