I'd rather walk than use Frontier again! You may think your getting a deal on your tickets but they will get you on everything else. Flying to Phoenix from Atlanta via United it would have cost me $25 to check my bag but the attendant told me I could carry it on free. Coming home on Frontier they told me my bag would cost $45 to carry-on or I could check it for $40 (plus there is an additional fee for a seat assignment)! When I tried to pay cash I was informed that they only take plastic! Since I didn't carry one it caused a real headache. On board the complimentary soda that United had cost $2.99 on Frontier. But again, since they don't take cash I asked for water. It was a shame that they couldn't even put ice in it since there was only a swallow and it was very warm. I didn't even attempt to use the onboard restrooms because I was sure there would be another charge for that! Save yourself money and pay a few dollars more on your ticket because Frontier will get you in the end!