Love the pergola! I bought it because my neighbor's with a solid roof (which I initially wanted to buy) got ripped off despite being bolted down to his patio during strong winds. I thought this would be ok in strong winds and it is! So far it has been perfect in the wind. 

I learned a few things:
1. loop the pull handle over the crossbar when not using the top
2. To save yourself a major headache when putting the 4 posts/legs together DO NOT screw the screws in completely. Only put them 3/4 of the way until you have all of them in. The holes on all of my posts did not line up perfectly and leaving the screws a little loose allowed for adjustment to make them all go in easily.
3. I used 2 small bungee cords to wrap around the top when it rained so it would not collect too much water. Worked great!