Along those same lines, we purchased about 2 or 3 years ago a metal 10' x 10" gazebo (rod iron look) with a waterproof cover.
(it has a slightly pitched roof - not flat).
for those occasions where we are outside, and want a Chuppah for a jewish ceremony -- and our indoor brass on is just not the right "look", we bring out the black gazebo. Grapevines and garland, and attachments of a few flowers -- with 4 drapery panels to make the "cover" going down the rib frames from the center -- and we have a pretty neat Chuppah!
Original cost was $107. on sale. We paid for it in less than the first rental.
We have rented this thing about 10 times in the last about 2 + years. Average rental is good $$$. The frame goes together in less than 10 minutes. Decorating & hanging the cloth takes about an hour. (I'm slow --- and take my time). Tear down is about 10 to 15 minutes.
Cheryl