How long after vaginoplasty can I resume sex?

Six-8 weeks. I would agree that 6-8 weeks is a reasonable time. I have patients who have had sex at an earlier date but this risks the possiblity of wound breakdown and other problems. Generally speaking most wounds are healed by 6 weeks, a brief period of scar massage, desensitzation therapy and vaginal dilation may be advised prior to resuming sexual intercourse.
Depends. Only your surgeon can tell you for certain, because there may be issues unique to you or your procedure, but 6-8 weeks would be a typical waiting period.