oh my gosh yes, just do it. I have done 1 solo trip and 1 kinda solo trip to DLP and I'm doing a kinda solo trip to Disneyland California in 2 weeks time.
The main thing about solo trips is the freedom. You can do exactly what you want , when you want, and not have to think about pleasing anyone or making sure things are ok for another person.
For example on one of my trips in EMH, I spent nearly an hour on Peter Pan, just getting straight back on as there was no one else in the queue.
Just one bit of advice, I always have a book with me , for when I eat at restaurants on my own.
Also don't be worrying about what may think, everyone is too wrapped up in enjoying their time in DLP, that no one notices if you are on your own.