We ended up going to CLE and it took about one week to get an appointment for a short interview after you fill out your form on-line. CAK also has appointments but not as many.O-Trap;1806320 wrote:
How long and time-consuming is it to get one? And what do you do at the airport once you have it?
It took less than a week to get the letter in the mail for approval. You get a special number to type in on your flight bookings to get your TSA pre-check.