Interesting, I as a non-food delivery Uber driver was super busy all night shuttling couples to and from restaurants. Biggest night of the year thus far.
Keep in mind maybe you were so busy because your fellow delivery drivers were striking and you just picked up their slack.
I left the company last April, but was there 5 years. It is definitely one of the busiest days on the calendar, along with New Year's Day, in the UK anyway.