Walk. Walk and walk more. I had my surgery on 7.6.15 and the walking the halls was the best thing you can do post surgery. I was thankful for my yoga training before hand. In yoga they teach about pushing yourself to that edge, not where you feel pain but where you can really feel what you are doing. That helped me to push myself to do just one more lap each time, and increase the laps each and every time I got up to walk. I won't lie to you, the first few times will be hell. I was so thankful for my pain meds that helped me (and kept warning my caregivers that I am going to curse like a sailor when I get in and out of bed).
Do not allow the pain to keep you in bed. That is the worst thing you can do. Even when you get home, walk. With the heat and humidity here in the Midwest, going outside I was scared of getting dehydrated. To combat that I would pick different big box stores and walk them. Pick places you might never go, as to make the experience new to you, but keep walking.