While I don't know how adventurous you'd have to be to have this dinner, it's really worth going. The van ride up and back was probably the most adventurous part (aside from trying to get my date to hold the toucan). It was really an awesome place. The gardens were beautiful and so was the more natural scenery with the water fall in the background and everything. I probably would have enjoyed getting to hang out with the bird a bit more, he was really cool.
Dinner was excellent! And the owner gave an interesting story to everything. They pick you up in a van right from wherever you're staying and drive you well into the mountains for an open bar and a great dinner. I thought the price was a bit much until towards the end of the night when I really realized how great it all was. They even give you a CD with all the photos at the end of the night.
It was just a very well organized short trip that you don't want to miss out on.
Word of advice, there are no good places for potty breaks on the trip. Especially for the ladies. It's not that long of a drive, but it's long enough to take into consideration.