Is Ultrasonic Cavitation good to do 3 weeks after liposuction with fat transfer to buttocks?

I am also curious is it good that they are doing it on my stomach and arms at the same time? I read one area at a time is better is that true? I did notice some softening of the fat after my first treatment and I plan on having 10 total with a few lymphatic massages but not after every treatment since this is to costly. I also read it is good to do excercise after each treatment but I walk 3 hours a day and stretch since I am still recovering from the lipo is this ok?