I seldom make ADRs in advance for solo trips, but I sometimes look the day of and most of the time have found a spot. I agree with dining in the lounge if one is available. I did that at DHS when I went for a day trip to see GMR. I looked to see if there were any openings at Prime Time Cafe, and there weren’t, but there were a couple of seats at the Tune In Lounge, so I had my meal there.