Lymphatic drainage after a BBL and breast reduction/lift. Are they suppose to be preformed with soft or firm pressure?

Thank you for the question and the information provided.
Lymph drainage massages can help with healing after surgery. This type of massage regenerates tissues to reduce scarring at surgical incision sites. Lymph drainage massages also reduce swelling and detoxify the body. 
Pressure and motion of lymph drainage massages work together to reduce pain, the pressure will depend on how much swell your body has. 
I recommend you to make a consultation with a board certified plastic surgeon.

Best Wishes.

Hello DearLymphatic drainage massage can have a beneficial effect on your general health. 
Lymphatic drainage can: 
help reduce water retention ; for instance, because
the lymph system has no pump, if you sit for a long time without
moving, the lymph can't flow easily — this is why you may experience
swollen feet or fingersLymphatic drainage massage can improve your skin texture by:
reducing swelling, puffiness and blotchesgiving you clean, healthy poresspeeding up healing in scar tissue, so it may, for example, improve the appearance of stretch marksI hope this advice helps you. Best wishes.-
Manuel Belén, Board Certified Plastic Surgeon