At my local park, we often visit when crowds are so low we don't have to get off a ride, we can just re-ride. However, I still think about 4 - 5 times is my maximum before I am ready to move on to something else.
Powder Keg at Silver Dollar City might be the exception, I can ride that one all day. One visit last year we rode it 5 times, then came back later and did another 5. So my record must be 10 times in one day.
At Disney parks the crowds generally prohibit too many re-rides but if I can steal a half dozen trips on the Tower of Terror I am pretty happy.
But 90, huh? Wow, I can't imagine even staying in a park that long these days....
Then head off to find something else to do (usually when alone it was animal exhibits) but invariably, I'd find myself back at Kraken for another 2+2+2 rides.
"Committed?" Several people have told me I should be when I told them of my marathon!
And you KNOW the kind of "committed" of which I speak...
My wife and I rode Spidey 30+ times in one day on our first visit to IOA.
I must admit...I'm pretty much a novice in comparison to the "90 times on one ride" record, and I'm barely 21!
The most turns I've probably ever taken on any ride is 4 to 5 times...which is probably shameful at best for someone my age...:(
Best record for me though would be 5 times in one day, three of which were back to back on Batman The Ride at SFMM while the first two turns were earlier in the day. We were lucky with the final three laps though, since repeat rides without getting off are a rarity at SFMM. Lucky for us, it was near closing time at the park and since there was a non-exsistant queue line the ride staff was more than happy to give us the chance to ride...
Unfortunantly, by the last lap I was more than ready to get off...I don't think my head could've withstood a final go...:(
During Extra Magic Hours on separate occasions, I re-rode Big Thunder Mountain twice (by ducking down so the attendants wouldn't see me) and Kali River Rapids five times. We were the only ones on Kali. The weather was "freezing", so people thought we were insane. It was chili, but not that chili - we had just left Ottawa, Ontario, where it was still snowing.
There was one time at Geauga Lake where I rerode several times. It was in the middle of the week during their last year of operation and the park was pretty empty. I had a certain fondness for the Big Dipper, a 1920's era wooden coaster. There being no line for the car I was in, I didn't even have to leave the train for a good 10 circuits. Once someone did get in line for my car, I got out of that one and into another one for another 5 or so. I don't recall exactly how many circuits I took...I would guess around 20-25.
The Big Dipper is now 85 years old and it still stands on the closed Geauga Lake side. Even after all that time, it ran like a top and was an absolute joy to ride. I hope that it can be saved someday.
Walt Disney World's Magic Kingdom
Disney's Animal Kingdom
Disney's Hollywood Studios
Disney California Adventure
Universal Studios Florida
Universal's Islands of Adventure
Universal Studios Hollywood