Congratulations on getting your orders!
Here is the answer from AFI 36-3212:
"4.15. Permissive Temporary Duty (PTDY).
4.15.1. Commanders may grant PTDY to members retiring for disability and members separating for disability who are eligible for benefits under the Transition Assistance Management Program (TAMP) for the purpose of aiding job and house search in connection with transition to civilian life (20 days
PTDY to members assigned to CONUS; 30 days to members assigned overseas).
4.15.2. AFI 36-3003, Military Leave Program and 36-3203, Service Retirement, contain specific guidance; however, not all PTDY procedures will apply to disability retirements and separations. For example, members can not take PTDY in increments because they won't know the disposition of their
case until approved by SAF. HQ AFPC/DPPD will resolve any questions on PTDY for members separating or retiring for disability.
4.15.3. Once approved, DoD imposes strict time limits in establishing separation or retirement dates (see Chapter 5). Generally, members must take PTDY in conjunction with the 20 and 30-day processing times and, when applicable, unused leave days they can not sell back to the government.
4.15.4. Hospitalized or incompetent members are not eligible for PTDY since they are unable to perform the mission of PTDY (job and house search)."
Hope this helps and your transition goes smoothly.