May I add on to this a bit?

Hotels: vast majority are Crowne Plazas, several Radissons, Holiday Inn, and even some MCM Elegante. There is no long/short overnight language so expect overnights at airport hotels, frequently in business parks with a few exceptions,

Although reserves get about 15 days off per month, remember that SW does not offer long call reserve. It is all short call. And since reserves are either AM or PM you will need to commute to base either the night before an AM reserve period, or the morning after a PM reserve block ends, scheduling almost never releases early.

Reserves fly almost every available day, but unlike other airlines you are not able to choose trips on reserve, so even if one trip is very commutable, you may not get it - luck of the draw.

There is no way to "drop" a trip. You can try to give away a trip, but generally speaking the weekend trips that Junior lineholders get are not very desirable to those who would pick up. And in the summer, when premium flying is plentiful, it's hard to give away anything.

Once you are a lineholder there is some good flexibility to trade between trips and pick up additional flying, but it can be extremely challenging to get rid of flying if you need time off for some reason.

Fatigue, sick, and commuter language is excellent. Crews are a lot of fun. Airplane is frustratingly antiquated. Company will not spend $ on things that they feel don't add value (like printers or window shades)

No crew meals even on long trans-cons or international turns. We pay for our own parking and uniforms. We have profit sharing but it goes into retirement rather than as a cash payout like at some other airlines. Retirement is a 9.3% match to the 401K rather than the 15-16% B fund offered at some other airlines. Can be made to ride in the cockpit during deadheads. Those are just a few things that come to mind that differ from Delta.