I'm about 6 foot flat, and had my first (and second - walkon) rides on Doomsday today.
Whilst I didn't notice any varied height limits, my first ride was on the red row west, and I did have to do a little contortion to get under the harness and into the seat.
I've also found it to be incredibly difficult to undo one side of the two-button seatbelt at the end of the ride. Anyone else noticed this?
I didn't find the ride to be shaky. It was quite an enjoyable ride and I reckon I could re-ride it for quite some time. The harness is comfortable, yet secure.
I did find the internal seats to be a little close together in terms of leg space with the person opposite, but the motion of the ride takes care of that most of the time.
End seats (brown at least) were far more enjoyable than the middle rows.
I'd love to see a longer, or a more intense, or faster (speed, not time) cycle, but i'm happy with it as a mid-level thrill. I think the biggest problem is that the ride appearance is intimidating to some, and probably puts a number of people off riding it.The missus is usually up for trying anything once, and whilst she hates centrifuges (won't ever do a gravitron or enterprise style attraction) or a marble coaster, she usually will try anything once - except this. except today.
She's decided she might give it a go next time though - so there's that.
Overall the area is fantastic, although i'd like to see more prominent information about the interactive elements, as a lot of people were wandering around, bashing the hammer and posing for photos, but I didn't see anyone actually activate any of those elements. It was only that I knew of the wristbands and where to find them that I even remembered to look for them in the shop. Overall I think they've missed the mark on those wristbands, and aren't marketing them as well as they should. Most of the elements didn't jump out as 'if you spend $15 you can make this thing do stuff', and overall it just appeared as 'here's some nice things to take photos of' - disappointing.