I havent been to these large festivals in EU-I hope to go to one. But at my age I'd much rather go to a smaller one.
I really miss Montreal's Piknic Electronik - site http://piknicelectronik.com/en/about/mission
It's a really fun atmosphere, smaller but they play music all day and you can bring alcohol and weed free of charge. It's pretty amazing, especially when the sun sets because you can see the Montreal skyline across the river. The best part is that it's every Sunday in the summer. If you have to check it out I'd go for 2 sundays it the middle of July as it is PACKED. I had lots of fun