You've done very well, TwinLolly, if you are almost ready for major surgery but you're still worried as your French is 'limited'. Don't worry. It's quite stressful enough thinking about having an intervention without panicking that you might not understand all the details. Hopefully you have already told your Surgeon that you don't fully understand French; you've probably recently seen your Anaesthetist and discussed your history and answered his questions. If you're anxious at any time, it's always best to ask that they speak in English - if that puts your mind at rest. Most patients can struggle to understand medical jargon and it's worse if you are afraid or anxious.......or not French!
Please take seriously the point that has been raised here about rest and about not lifting anything even slightly heavy, at least until you see your Surgeon again. Rest is paramount - and not just putting your feet up on a couch and reading or watching TV. Each afternoon make a point of going to bed - it's likely that you will sleep for a couple of hours, which will promote healing and make you feel a lot stronger much quicker.
Don't decide that you won't need much or any pain relief - especially initially. Remember that being in pain over a lengthy period will need stronger drugs to alleviate that, as opposed to something that is dealt with early on and before you start to feel really unwell. I expect you will be surprised and pleased at the days when you feel good, and a little sorry for yourself when you don't! It's a huge adjustment for your body to make and you must promise yourself to take good care until you are fully recovered.
Otherwise, good food and plenty of gentle exercise to help get you fit again. If you have any concerns, with constipation for example as a result of taking pain killers, then do speak to your Nurse when he/she visits each day. It's very important that you have that regular support on hand, so that your wound healing can be assessed and treated, any queries can be addressed and your general recovery monitored.
Make sure that you have all your papers and documents, tests, results, information etc., to hand when you are admitted, but try not worry. The standard of health care here is excellent and I'm sure you'll be treated well.
Wishing you and swift and uncomplicated recovery!