That is largely dependent upon your unit’s primary mission. An atrillery unit’s members would spend a great deal of time on setting up, firing, and moving. An infantry unit, on the other hand, would have lots of physical training, range firing of personal weapons, practice with squad weapons, and practicing field tactics.
For combat units, and for many combat support units, time in the field is emphasized more. The two weeks is usually not spent in garrison as it was with AIT.
It’s highly unlikely you’ll be leaving your unit, unless you have a family emergency of some sort.
Your two weeks will likely be during the Summer, although that’s dependent upon training site availability. Sometimes units must drill during the Spring or Fall, and if you’re in a mountain unit, such as the 10th Mountain Division, you will most likely drill in the dead of Winter at someplace very, very cold… and high! : )