We've definitely experienced similar travelling as a young family. Coming back from Orlando last January, we got into Calgary at about 2 am thanks to a very long delay. As usual, customs questioned our kids (5 and 9 at the time). Our kids travel great, even at 2 am, but our 5 year old could only confirm we were her parents. She could not remember when her birthday was, or what time of year it occurs. Customs simply waved us through

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We live in a fairly remote area and we've wondered if gas stations in our area will be low on fuel with everyone bolting out for a road trip as soon as borders open up.