Hi dmcfad2! How long is the first cruise after the 6.5 weeks after surgery? Will you have completed physio therapy by then? It's tight but it's doable. First 6 weeks is the hardest. The staples will be out and you wound should be completely closed. You'll still need to be icing your knee and take it easy on the amount of walking each day (ie swelling). Sleep at night may still be problematic. You'll probably need to put the leg up a bit every day. If you have pain, roll things back a bit. If you're going on a nice easy cruise and you expect a lot of down time, go for it. Do your exercises every single day and bring your cane with you. Being at home has no real benefits other than all your things you need are close at hand. You'll be very motivated to progress with the cruise date book. Bend and straighten. Bend and straighten. Repeat. Good Luck!