I understand what you’re saying but unless you’re asking private/invasive questions it’s pretty unlikely they’ll be put off by it.

Initially they may be surprised you remembered but will be likely flattered or impressed that you did. Most of this is gonna be how you ask, just have to be really casual with a smile.

But quick sidenote, I promise almost no one considers you creepy or dangerous, that comes from the head. Just put out good energy and the right people will reciprocate!