[TampaFla]

Most (I'd say 70%) who work in tire shops simply tighten (usually using an air gun) the 1st lug then the one next to it and the one next to that... few know (or care since it's faster) to alternate and even fewer know to tighten them in stages. A good tip-off is when you pick up a car with custom wheels and no one even warns you to check the lugs once you're "run the tires" a bit. No way to tell whether it's the dealer's fault or a vandal (at least that's what we were told to tell the complaining customer many years ago).

If you both had "new" wheels, I'd wonder about it...