The staff explained the upsell options poorly and still tried to sell them.

It's acceptable.

The pick-up and drop-off process was very simple and convenient. However, there was no electronic toll card, and the first time I encountered a cash only toll lane on the highway, I missed it. When I returned the car, I hadn't received any toll information yet, so I'm not sure how long it will take to charge my credit card. Also, since I was unfamiliar with the nearby gas stations and worried about refueling too early, I opted to let the rental company fill the tank and pay the fee. The service fee of $1 was acceptable, but they charged me $4.8 per gallon, which seemed too high for Chicago compared to the $2.5 I saw later in Dallas.

Returning the car was very easy. There's no need to go to the counter; just follow the signs for 'rental car return' and drive to the Alamo location. Someone will wave you down to stop. They only check if the gas tank is full, then let you take their shuttle bus to the airport.

The staff were very enthusiastic and humorous. After completing the paperwork, I felt really good.