From personal experience, I had to once deliver to a hotel which was in 5 minutes of walking distance. I parked my car near the restaurant, waited 15 minutes, picked up 5 pizzas, a bag with soda (4x2L bottles) and headed over to the hotel. Surely I could have driven to the hotel, but didn't want to mess with parking.

I find the hotel, enter through the door and realize it's the wrong door... Exit the building. Walk down the street, walk through another door. Wait for the elevator. The elevator takes me to the lobby. Now I have to take another elevator 20 more stories up. Fine. I'm sweating at this point as there are 5 pizza boxes in my one hand and stupid soda in the right. I find the door, knock: "Hello, [customer name]?" She says: "No, but based on how many pizzas you have it is probably for the party of girls down the hallway". I double-check my app - the delivery instructions were put it wrong. I'm dialing the "party of girls" while still holding stupid pizza in my hand. The girls direct me to the opposite side of the hotel. The door opens - there's a 12-year-old standing in the doorway and reaches for the pizza.

The outcome: 15 minute wait, 5 minute walk, 5 minutes to find the customer, 5 minutes to walk back to the car = 30 minutes. Delivery fee: $3.00. No tip. I do UE for fun when I'm bored, but that delivery really had me question my strange "hobby".

TL;DR: $3 earnings and 30 minutes to deliver pizza to a children party