Something to remember is the estimated wait time is only based on the front of the line, e.g. whose check they just cleared. So if we started this morning with a 10 minute wait time and add ten full days worth of people in line, it'll estimate no more than part of a single day wait for all of them as they process checks that day.

9,000 sounds like it may take upwards of 4-5 days unless they brought on extra staff.