Personally, I wouldn’t worry about it too much. Use what you think is appropriate. If you’re unsure, use they/them; if they correct you, adjust accordingly. If you want to be most accommodating, default to they/them for everyone you meet unless they correct you or you learn otherwise. If you’d like others to feel more comfortable providing pronouns, providing your own - even if you believe it is obvious - can be a way to help normalize it for others.