The advantage is that long-term anticoagulation is not required. The disadvantage is that it will need replaced. It may or may not be feasible. Most likely it will need replaced. Again this would depend upon the individual case, your preferences and the surgeon.
Any second surgery is more complex but the risks are still low.
Limit salt intake to help cut down on fluid overload. Otherwise no restrictions except what your doctor tells you. I hope you find this information useful. Information provided in the heart forum is for general purposes only. Only your physician can provide specific diagnoses and therapies.