For Americans - this was my covid testing experience/timeline (November 2021). I went to both Walgreens and CVS in Southwest Florida.

Walgreens: Scheduled my appointment for 2:15PM on a Sunday. Waited ten minutes in the drive-through before reaching the window. Took over fifteen minutes to get the kit in my hands - the person administering them seemed extremely disorganized. Clueless, too - I asked if the results would have "RT-PCR" written on it and she had no idea what I was talking about 😬. Was also told I’d get the results in a couple hours, which freaked me the hell out (thought I was given a rapid test), but I think they just misspoke. Sample was received by the lab the next day (Monday) - Walgreens says they don’t usually ship their samples on weekends, so be aware of that. Results came back on Tuesday at 10:30AM, so all in all it took a little less than two days (44 hours). The service was terrible, though, so I wouldn’t go to Walgreens’ again if I had the choice.

CVS: Scheduled my appointment for 11AM on a Monday. Waited forty minutes in the drive-through before reaching the window. Received the kit within a minute. I asked if the test would have "RT-PCR" written on it and she said she thought so. With their system you cannot see when the lab has received your sample, so no info on that. Results came the following day (Tuesday) at 5:45PM, so all in all it took about a day and a half (31 hours).

And yes, both had "RT-PCR" on it.