Another place that I have planned on trying several times, but not able to fit it in to my schedule (usually not in the mood after just completing a marathon)...Was able to do this in December and went that morning before check out. I was lucky as there was not much of a crowd, but in summer you better make reservations (suggested at any time really). Some small kids were in the same group. The instructor Robert was excellent, but particularly enjoyed seeing how well he worked with two young kids (both around 6) who ended up doing very well. Photos are actually reasonably priced. Even though I probably looked like I was drunk trying to get out of the tunnel it was a great experience. I will be back