The first week of March in 2019 is Mardi Gras. Much of Louisiana gets the whole week off of school and many families go to WDW (or skiing) that week. Last year, Mardi Gras was in mid-February, so your trip the first week of March would have been sandwiched between Mardi Gras and most spring...
Given that 26 was on the left side of the Hall of Presidents (if you're looking at the Hall head-on), I would think 19 would be somewhere to the right near where the Muppet show is/was.