I bought 2 of these to try out as they weren't expensive and i had possible future plans with them in mind!
There is no work or setting up involved, just light it and go! It filled up with air and started to look like a filled out hot air balloon before you knew it. It seemed to raise slowly to start with and then really take off. I didn't think it appeared windy, but when it got as high as our house height it suddenly shot off (wind i assume) and headed away from us. If you're expecting it to go straight up, as in most pictures you may have seen or as i did, then make sure it's a perfectly calm day or night. Also, I did have a little trouble lighting the fuel block (used about 6 or 7 matches i think), maybe use a lighter!
Overall, a good product.