Yes. You can walk. You can see the rental car area from the check in are. If it's after hours when you're dropping of the car there are "mailboxes" right outside the sliding doors and you just drop your keys in. Also there's no drop off. You park your car back in the spot you picked it up. Hope that's helpful.
Yes you can. About a 1-minute walk from your arrival gate to the counter. About the same from your rental car parking spot to the Budget counter. Dead simple plus super friendly service, based on the one time I rented a car from there.
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