They open at 730am maybe if you're the first one in you might be able to get a reservation.
Call the Olathe location and ask about walk ins. I've been there in the afternoon and they didn't seem busy and appeared to take walk ins.
To get in line virtually you will have to log in to their website somewhere in between7:00 or 7:30am. If you try to log in after 8am all the available spots will be taken and you'll have to keep trying again the next day. I've noticed the mission location fills up first then the olathe location will fill up.
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