You can't really complain about robustness, as it as more than you'd expect for the price and does the job perfectly. So I removed the sides and just use it as a canopy over a hot tub, permanently fasted in place, and I'm very happy with it.

But the sides are so flimsy that even the slightest breeze has them flapping annoyingly and they wouldn't last 5 mins in a freak gale before you got it disassembled. So unless you live in a freakishly still environment, don't expect much shelter from the weather!