My wife was walking on the beach in Negril 8 weeks after double hip replacement. I don't think she would have been very stable doing that or able to comfortably fly at 5-6 weeks. She recovered remarkably and had everything (age/weight/health/etc) in her favor for recovery. I haven't gone through it personally, but my opinion after watching her is that 4-5 weeks would be to soon for much, if any, travel plans.