It was a good attraction, it was unique and a tiny bit educational. I was/am sad that it no longer exist. If it still existed today they would have no doubt have had to make some significant upgrades to accommodate the typical "body geometry" of today's guest, when I was in my teens and twenties I could easily get down inside the sub and fit, if I had tried in my thirties I expect I could have made it but would have sworn off the ride at that point, today it would be a laughably bad experience for me and those watching me try. Note: that is NOT a complaint, I understand that through my own lack of effort and/or discipline I have allowed myself to become fat and it is not anyone's problem other than mine. I DO NOT feel a company should be obligated to accommodate my lifestyle choices.