A lot of people volunteer so they can go to the festivals for free actually! I volunteer or live paint(which is considered like dj/vendors). I haven't paid for a festival ticket since 2016, but I go to multiple festivals every summer! When I volunteer, its usually 3 to 4 shifts of 4 hours each, then the rest of the weekend is yours to enjoy. Another plus side is you get in a day early (premo camp spots) and if you volunteer, sometimes they feed you too which saves even more money. It's possible without much money, but there is a bit of sacrifice to it in terms of giving up some time. But honestly, integrating yourself into the community like that with volunteering is so worth it! You meet so many amazing people that way and you feel accomplished and full that you helped make that fest stay on its feet and helped keep it going (because without volunteers a lot of fests would not flow well). All the best to your and your wife! Maybe I'll see ya guys at a fest someday soon ;)