I did a solo trip to Thorpe last Wednesday. I was getting sick of people saying they would come along then deciding not to, and I'd finally finished all my college work, so I thought "why not?".
I can honestly say I really enjoyed it, even if Stealth's 55min queue was incredibly dull by myself. I found it very relaxing; time to myself, time to think, no people telling me they want to leave early, no being late, just...me and the park. Stayed from 10am 'til 5pm.
Vortex was walk-on, got on Rush straight after (with no one wimping out) and I managed to get front row on all the coasters, and another go on Inferno back row left seat at closing time. Perfect.
Much to my surprise the park was quite busy, odd since I was there on a school day and thought everyone would be at school/college/work. But I still got everything I wanted to done, with the exception of Slammer which broke down when I was queueing for it.
Doing the park alone was a nice experience, but not half as good as with friends. I'd definitely do it again though.