Should I pay the baggage storage tip at Hawaii Tourist Hotel when I store my baggage or when I pick up my baggage?

Although I left my luggage in the car instead of the hotel, I think this is similar to the tipping principle of parking service: I was tipped when I parked, and I hope I can stop after I get the tip. Not when you pick up my car. You can put your luggage almost the same. I suggest you give it when you leave. When you get there, you can also see how other tenants do it. But to be honest, I see many westerners don't tip. . . .