I'm not sure I understand. Why would someone dismiss a plan that they think is generally solid and doesn't have a large cost, just because it fails in a few edge cases (bathroom, etc.)? Seems like this is strictly about getting access to more information to increase your chances of a good outcome (even though it doesn't guarantee it).

If the idea is that 5 minutes isn't enough time to beat the traffic -- well, yeah, could be, but that also depends on where you live.