Your timing will perfect but I'd go inside for the experience but no dining in.
I went there before they opened, looked like 20 cars was ahead me.
We just drove back to Washington from California and stopped to get burgers to bring home. It was a Saturday at 4:30 pm drive thru was way longer so we went in. From the start of standing in line to getting our order it was only 59 minutes.
The line is long but honestly its worth it!
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