I call Aligiant the "ala carte" airline because you pay for absolutely everything ON TOP OF the advertised price. I noticed they recently at least packaged all of these extra fees into a single number to make it a tad easier to compare to the other real airlines. Spoiler alert; you barely save any money once you include those fees.
DW calls Aligiant the "Leisure" airline because it is almost never on time. If you are on vacation and your schedule is flexible, OK, but if you really need to be somewhere anywhere close to the scheduled time, don't count on it. As others have noted, they don't fly to every location every day, so if your flight gets cancelled it will be days, not hours, until they can get you there.
Buyer beware....