Is There an Option to Tipping?

i'm making this up as i go. Let's say you're going to a different city, andyou're going to attend a wedding. And the an airport curb side check in, and aperson ar that gets your bags, and they take the bags over to the, ah, to the carosel thing, they check you in and all that. Ah, because i there's ambiguity about tipping, i don't do it. I will avoid choose a less convenient option at times if there's ambiguous about tipping, especially when i don't carry cash. That back in the days when i had cash, like, here's a couple bucks, you can tell me if you're