I just did my first fully solo trip back in January (my TR for it is in my signature). Loved it so much that I'm going solo again in September!
When I went in January, I thought "three nights is enough; I'll be alone so I'll get everything I want done". I was also concerned I'd get lonely or anxious being all alone in the big World. Boy, was I wishing for more days at the end! I rushed so much that I really hurt myself and ended up just limping around on my last day in agony. Next time, I'm going for five nights; then, I can rest a little.
Yep, I got a TON of "we need one rider, solo rider" on my trip! I skipped quite a few lines that way, especially on ToT. Every single time I went through that line I got pulled to the front as a solo rider. EVERY time. Plus, everyone was so friendly and talkative when they saw I was alone; cast members went out of their way to chat with me, while other guests often struck up conversations. So much fun.
I didn't make ADRs, but as a solo diner I was able to walk into some restaurants (like Sci-Fi, my first time there!) - seems like there's always room for one. This time, I'm going to have a cocktail or two myself and really relax and take in the sights! I'm thinking a Grand Marnier slushie and Illuminations will do the trick!