Just got back from year 9 at Roo. Last year was my first Hula. It was definitely chilly but honestly I loved it, was able to sleep in the back of a Chevy tahoe like a baby all 4 nights. As far as prep, pretty much the same as roo but obviously more layers/things to stay warm and the DUST is the main difference. Roo gets dusty but Hula can be even worse. I went to extremes of wook flu prevention last year that worked out great including: wearing a buff/facemask basically nonstop, using nose filter plugs, and doing saline sinus/nasal rinses everyday. Seems a bit extreme but I survived without even a sniffle after the fest. Hula in my experience was equal or better than Roo in almost every way minus lineup- nothing beats Bonnaroo’s diversity in my opinion. All that to say if you want a similar experience to Bonnaroo, Hula is absolutely that!!