I've done many other types of vacations solo, but doing Disney solo for the first time in 9 days!
Solo beach trips are AMAZING. I can't say enough good things about them. It is the most relaxing thing you will ever do. I spent 5 days at Hilton Head Island just before Christmas celebrating my 35th birthday. I had the best time. I slept in and ordered room service for breakfast and walked on the beach and spent time at the pool and visited the spa and ate wherever I wanted to, whenever I wanted to.
A lot of time I will combine a mostly solo trip with visiting a friend somewhere for a day or 2. Like a good friend got married in Colorado in 2009. So I turned it into a 2 week road trip out west by myself. Was alone the first week, then was with friends for the wedding weekend, visited another friend nearby for a couple of days and then spent a few days getting home, exploring places along the way. Flew to Boston once and stayed with a friend a couple of nights, but explored while she worked, then took a train to NYC and stayed with a friend there and explored while she worked. Went to New Orleans for a college football national championship game, spent a couple of nights with friends, and then 2 nights solo and went to the game solo. Had a blast. All this is just to say...anywhere solo can be a lot of fun!
This WDW trip I will be solo for 6 nights (meeting a couple of DISers for meals and rides here and there), and then visiting a friend near Tampa for 2 nights.
I wasn't too sure about a solo trip to WDW, until I got on these boards and realized how many people do this! Now I have 2 booked!