Hi David,
Well good luck in advance.. I was told I would have general anaesthesia but I was able to discuss the pros and cons of just having a local with the Anaesthetic Dr and decided on the general. He said they do a local as well. I only had 1 bunionectomy and I dont think I had any ill effects of the general, though once the local wore off my foot hurt. I thought it was bearable so didnt take the pain killers though as I couldnt get to sleep eventually succumbed to paracetamol. Didnt need painkillers during the day, and only needed them for 3 nights in all, but only took 1 painkiller per night. They encourage you to take a lot more.
I am now at week 8, and started cycling again about 2 weeks ago, first on an exercise bike and then on the road. Cycling is much easier than walking, so I rather think tennis is going to be pretty optimistic, but we are all different.
Definitely keep up your exercise regime until the last minute, why would you not? The fitter you are, I think the better your post operative outcome.
I think you do lose some of your fitness, but I did exercises sitting on a stool until I felt my foot could bear my weight. You can do floor exercises, and keep trying to bend your toes while you are keeping your foot elevated, because the big toe will be pretty rigid.
Have just started being able to wear my trainers again, but I think getting back into shoes will depend a lot on whether your foot has much swelling. You will notice little niggly twinges in your toe, sometimes little sharp shooting pains, but really I thought it would much worse than it actually was. When you get up in the first few weeks, your foot will feel uncomfortable because all the blood rushes there and it feels engorged, but that passes.
The best advice though is to rest up as much as possible and dont rush things.
I didnt think I would survive being idle for so long, but somehow your body seems to go into a different zone, hopefully and you will accept the enforced rest, which in fact can be enjoyable.
Good luck