Yep, any outdoor rides really they're cool with pics. I've taken pictures on Everest and Big Thunder, multiple ride thrus as well and I'm not really covert about it.
I rock a Nikon Coolpix simply for convenience. I pretty much got this camera for the parks. I rock a D-40 also BUT that's not nearly as park friendly. If I broke the D-40 I'd probably cry, and it's going to be a lot harder to get on-ride photos with a D-40. The Coolpix was $75 on Black Friday. If it breaks then it breaks...I'll go buy a new Pocket Digi. The DSLR rarely makes it to the parks with me, I'll take it to HHN but very rarely do I take my DSLR to the park.