I've done the solo routine at DL and it was actually a lot of fun. Sure, you don't get the laughs you get when travelling with friends and family but you meet new people. You get to realise how many different types of crowds populate the parks and just observe all the peoples' different needs and wants - which also puts in perspective complaints we may have about the parks. Things like the MM&Y that's shown over Small World, seeing the popularity of Pirate Island or the princess M&G makes you realise we may not like it but they are considered success stories in the public's eye.
Moreover, you get to appreciate the stuff that matter most to you that otherwise touring in a group you'd compromise due to lack of time or interest from other members. Things like the small details, the smells, reriding a slow ride (as opposed to the regular reriding of the thrill ones) just to see all the things you missed the first time around. I'd definitely recommend it!