Hi!,
I have one too, and Rich, (Robins on here) has one also.
Easy to put up was my main buying point, when you have a 4 and 2yr old to keep entertained, you can't afford to take too long faffing with poles, asking the other half to help, when she is looking after the little 'uns.
Now i know you can put a awning up on your own, but much quicker with 2 people, the Vango Kela is simple, comes with a great air pump, which i also use on the double air bed sofa we use inside, and for the paddle pool at home, doesn't take long, and seems very stable in wind, and will not suffer from damaged poles in high winds like normal awnings.
The airbags as thick plastic, and are replaceable if damaged. You can use a normal puncture repair kit, and a spare patch comes with it i believe. It's lighter too, as no metal poles.
Cheers,
Alistair