I'd say mainly two things about this festival:
1. Never arrive almost in time for your favorite band's gig (I didn't see Imagine Dragons because of it - crap!);
2. Dear organizers, please don't make the stages so far from each other again! Seriously, it took almost half an hour to get from one stage to another, which resulted in several show minutes lost, not to mention the difficulty of locating the stages!
It wasn't so well organized as Rock in Rio, if you want comparisons - and I know you do! -, the place was too big (although it comported the crowd relatively well) and, as always, food and beer were too expensive. The only mega downside was the "how-to-get-home" organization: there were few public transportations and taxis simply wouldn't collect passangers (it was the first time I saw it in my whole life!), which almost ruined my night.
As a whole, it was the festival that I least enjoyed, when comparing it with SWU and Rock in Rio. Anyway, my final conclusion regarding Lolla is this: I'll go again next year, if the line-up is cool and if I arrange a decent transportation to and from the festival.