Hi! I'm a 56 year old educator who thought mine would be a breeze, as I had been active swimming, practicing yoga and doing dog agility. Yours might! Mine wasn't, partly because I had a rare complication and partly due to what I am going to talk about below.
From reading through the forum and through my own experiences, I thing surgeons have a different definition of success than patients do. Surgeons are concerned with how the implant fits and if the joint is working properly. That's the lens through which they see things.
What they don't experience is what is happening to you between visits. Each hip is different, so your pain might not be locate just at the incision. The muscles and surrounding tissue gets yanked around pretty violently during surgery, so it's not a minor thing from which to recover.
After surgery, your body is working really hard to heal from the wound, so a lot of your energy is being used for that. I was exhausted for weeks, even though I wasn't doing much. And my brain didn't work correctly. My reaction times were slow and everything took forever.
The exhaustion, insomnia and brain fog were things I hadn't expected and are part of recovery that surgeons don't really consider. Again, part of my issues had to do with a nerve injury, but I really didn't feel like I was in good shape to be taking care of other people's children, even at 12 weeks. I ended up taking an extended leave of absence because my school simply could not make the accommodations I needed to have.
It's good that you have the school holidays built in to your recovery time. That will take some of the pressure off. Again, this is just my opinion and my own experience. Everyone is different!