Inflatable hot tub?

Actually got one last week. I put down to 4 by 8 sheets of that three-quarter inch foam board... We have used it every day if not once at least twice a couple times three times... We absolutely love it... price was just a little under 900 to start but after you buy a few things you're usually at 950... I was just seeing if anybody else had one and what they thought of it?
Of course at this point the number one question is longevity...
We have a covered concrete patio...