Sorry, a couple of additional thoughts -
Thanks for the comments Joker. I've only done two, but you learn so much by doing, and it is great fun. On this last one I got a screaming tension neck/head ache I think because I was so tense with all the buzzing, all the bees flying in my face, the bee vac noise. I had to go relax and rub out the tension and give the bees a break. Aside from this it was fun and educational. Also, I noticed that my mind got extremely focused. I didn't think about anything else at all for 3 + hours.
As for transporting the bee vac box home. I have a plexiglass top so I can see how the bees are doing once vac'd in. But the plexiglass will act as a green house if the sun hits it. So, so far I have been able to keep it in the shade, and when transporting in the back of the truck I cover it to keep the sun off it. And provide ventilation through the various ports covered with screen.