My partner and I played this in August 2011. We drove there and there are other attractions nearby making it a bonus to go there. It was post winter I think so they used warm water. Ogo's route is slightly longer than Zorb. The staff was very professional and quick in managing us. We were given clothes to change into FOC and also a set of towels to dry ourselves afterwards.
Once getting into the ball, you'll have to push yourself forward to get the ball rolling and no, dont worry, you wont be going topsy turvy in the ball, hitting yourself everywhere. Because of the water, you'll be fine :)
We paid about nzd50-ish pp. I have to say its quite costly , even the photo package too, for something that goes on for a very short duration. But then thats the standard price for attractions in NZ. Overall, I would definitely recommend this.
If you own or manage OGO Rotorua, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.