Resolves to the number of hours from curbside to arriving at our gate. (But resolves N/A if it takes under an hour!) We're checked in but need a boarding pass from a ticket agent. And our backpacks will probably count as carry-ons.

Our flight time is 9:25am on KLM to Amsterdam for a connection to Portland.

(Meta: I'm realizing that this market won't likely do us much good because we need to know the worst case -- or say a 98% confidence interval -- rather than the average case. Which means we need a Metaculus-style market that yields a probably distribution!)

PS: Updated to be conditional, thanks to a clever idea from @James to estimate the worst case rather than the average case.