pre-cruise season Saturdays have been fairly pleasant to this "super traveler" PreCheck member. Hardly a wait.. in fact, I waited longer at the Alaska Airlines First/MVP check-in line than I did TSA.
Apr 29th-ish- 6PM flight - no problems at all around 5PM. Made it to the BR with time to sit down and stare at my plane for 10 minutes.
May 7 arrival - 4PM - no noticeable lines for TSA (Checkpoint 3/5). May 8 departure - 840AM - arrived at 740AM - checkpoint 5 empty, no precheck open, but Pre @ 3 open, no line. Hardly a line for regular. Lots and lots of stanchions spread around though, so I'm assuming it can become a sh*tshow quickly @ 3...
4 was closed both times.