So after I use a G+ selection, I may have to wait from 90-120 min before I can request another?
If there is a reset clock as with MaxPass it is reset when you show up at your next LL/FP, OR..., after 90 (or 120) minutes transpire.
So, if it's 9 AM, and you get a LL for PPF at 10 AM, then when you show up at PPF at 10 AM, you can chose your next LL.
Or, this scenario: It's 9 AM and you see a LL for PPF isn't available until 5 PM. So you grab it. Then, for the next 90 (or 120) minutes, you do whatever you want: go on a standby line, or eat breakfast, or watch the Dapper Dans. Then, when it's 10:30 AM (90 minutes later) or 11:00 AM (120 minutes later), then you can grab your next LL. Perhaps it's for HM at Noon. This means you now have two LLs: One a 12-1 PM for HM and one for 5-6 PM for PPF.
The Maxpass rule is that you can grap your next FP when you show up for your FP, or after 90/120 minutes, whichever is soonest.
And again, we haven't confirmed that LL will follow this Maxpass rule.