I had paracentesis done about 3 -4 times. The first time I requested it because I looked about 9 months pregnant (was not), had trouble getting out of bed, and slight shortness of breath after bending down or doing chores. They removed close to 4-5 liters of fluid each time. But I was never drained "dry" and always had some fluid remain. It is pretty painless (just don't look at the needle) and you'll have some gas afterwards.
However, for those two months, the ascites just kept coming back, which I was warned about, and I needed to repeat the procedure. Eventually, the ascites just stopped, much to my relief.
Hope this might help.