Tummy tucks or abdominoplasties do not have to include liposuction and a rectus diastasis or wide rectus muscle repair.  These added tummy tuck procedures should only be done if you need them as they only serve to increase the potential for complications from the surgery, although this increase is usually small.
Many patients are adverse to the repair because of the recovery but with a 24 hour rapid recovery, no drain tummy tuck you should be able to do most things within a couple of days and back to the gym in a week if not sooner.  You are not healed and may be on a more limited workout routine but certainly back dong things very quickly without any narcotics.