I've come to the realization that the problem with this wedding is going to be less the lack of sleep and more the time zone differential. Going to bed at 4 AM and waking up at 11 AM isn't the worst amount of sleep one could have. But since I'm in Mountain Time, that translates to going to bed at 6 AM and waking up at 1 PM Eastern Time, which is not precisely compatible with the bar schedule. Oy.
Other observation: You ever have that thing happen where you have to wake up by a certain time, and you wake up a little before then, look at the clock, and calculate how much sleep you have left? But sometimes, you're so addled, you completely misremember what time it was you woke up. This is sleep roulette, because it is equally possible that you thought you had one more hour of sleep when you really had five minutes, or vice versa. Today, I won the roulette (I thought I woke up a little before 11, but really had woken up a little before 10). So that was good.