Is this common or am I experiencing something unusual?

I’m a 25 Year old male, one thing I’ve noticed is if I go to a restaurant or some kind of business two or three times but then don’t come back for long periods of time (let’s say three months), when I do come back, people actually remember me!

This seems to happen quite a bit where I’ve only been somewhere a couple of times and then come back weeks or months later and people still remember me. I find it strange, but fascinating. Do I stand out in some way that makes me memorable or is this a more common thing than I realize?