No its first come, first serve. Its a larger lot, but during busy holidays it can become full and they will note that on their signage going into the airport. The cell phone lot is also located before the entrance of the T1 parking lot if your waiting for an arrival flight. You can park there free short term (60 min or less) until you get texted to go to the drive thru pick up area.
No there's a lot of room
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