If you want early show trips that go over a weekend, you'll have no problem getting those on any fleet. The 737 trip mix percentages are 14/1/46/27/12. They have a decent number of high block Caribbean turns hence the abnormally high number of 1 day trips. Those tend to go very senior. The 7ER (757 and 767-300) in ATL is 12/2/32/19/23/12/1 (1 through 7 day trips). That is skewed by the fact that the fleet does international flying as well as a heavy dose of domestic. Expect to become intimately acquainted with the state of FL if you're junior in ATL on that fleet.