I'm a newbie solo'er, having just experienced my first solo trip in early May, but already having booked my next trip for 2011
For me, the worst part was flying, I hate flying, and having to do a transatlantic (I'm from the UK) flight by myself, then through immigration, was something I wasn't looking forward to. The flight was still horrible, made worse by a detour around the 'ash' cloud which added another couple of hours onto the flight, but immigration was fine.
I loved every minute of my solo trip, from waking up and deciding on the spur of the moment to head over to MK for the opening ceremony (something I'd never done before), even though I'd planned before hand some of that went out the window!, also taking time out and eating TS solo, I had a mix of meals, some with Disboard friends/people I hadn't met before, and some solo, I had great meals/service wherever I went and I'm going to venture out to different restaurants next time.
I didn't encounter any rude or negative people this trip (which was a first!), I even stood in line for character photos by myself and didn't feel at all awkward, but I think I was on such a 'high' that nothing could have made me feel awkward
