Delivery couldn't have been better, as it arrived nearly two weeks early.  The delivery men knew what they were doing, placed it on our ready slab exactly where we wanted it, unpacked the cover and installed it.  Now to the spa itself, what a no-brainer to Plug and Play....and we were in it the next day.  Jets were as strong as our former large hot-tub, and lighted waterfall is beautiful, and it holds its heat well.  So glad we bought this hot-tub.