Everybody recovers differently from surgery. some people are doing desk work after a few days, others need a few weeks. this is a very individual process, but in general terms, about a week or two is common
Yes - the band is essentially a plastic (silicone) device, that can break and hence cause leak. if that happens, its effectiveness is lost. if you do not need the band to be inflated to maintain satiety and weight loss, theoretically it can just be left in place as long as its not causing...
Regain after a 10 year R-Y can be due yo pouch enlargement however I recommend a GI scan to determine if the restrictive function has being compromise or the anastomosis is not in the right place to do its malabsorption job. Definitely testing is needed before a revision is considered.