BOOM, Belgium — Spirits were unsurprisingly high on the first day of Tomorrowland, which kicked off officially on a rainy Friday.

With tickets having sold out at a rapid clip, the 180,000 festivalgoers who snagged admission had every reason to be amped about gaining entry to Europe's largest EDM event. (Those lucky enough to board one of the 29 Tomorrowland-themed flights that landed at the Brussels terminal got the festivities started early.) But dance fans that couldn't make it to Boom could still get in on the action as DJs and attendees shared their personal experience for friends and the world on their social feeds.

MTV News is on the ground and we got you a snapshot of some of the best moments from Day 1!

With its 2013 theme pegged as The Arising of Life, Tomorrowland was getting lots of love on kickoff day. We know this if only because of the sheer number of hearts that were included in tweets. (Even DJ Otto Knows showed his sweet side!)

And we can't blame them: The Tomorrowland grounds are incredibly beautiful as MTV News learned when Dimitri Vegas & Like Mike gave us a sneak peek at the highly anticipated designs for the event's 15 unique, fantasy-themed stages. In fact, with more stages than you can count on two hands, the biggest problem for festivalgoers was probably choosing which DJ sets to attend.

We also spent a good chunk of the first day in the artists' compound speaking to acts like Afrojack, Steve Aoki, Nervo, Hardwell, Crookers and Tiësto. Aoki's record label, Dim Mak, even snapped a pic during our interview with him and shared it on their Instagram. The producer told us a little about a highly secret project that he can't wait to debut, and we'll have more details on that soon.

The crowd frequently took to Twitter to share song lyrics and titles as they were being played. During Hardwell's set, @xLeSexy tweeted the lyrics "Everybody f---ing JUMP! #TomorrowLand" and @quevedilloJR shared the song title "If I Lose Myself."

Fighting through an injury, Nervo's Liv put on a high-energy set alongside her twin sister, Miriam. Fellow DJ R3hab even joined them to play some tunes.

Another DJ duo, Bassjackers, took us onstage where they showed us just how crazy the party was while playing at Afrojack's Jacked stage.

Tiësto thrilled the crowd during a set that included Macklemore and Ryan Lewis' "Thrift Shop, and hits from Avicii, Calvin Harris, Swedish House Mafia and more. The Dutch DJ mixed in some more top 40 with Bruno Mars' "Locked Out of Heaven," Icona Pop's summer smash and signature songs by an eclectic selection of acts like Kid Cudi and Oasis. Fans cooled down to party anthem after party anthem.

Thanks to Tomorrowland radio, EDM fans can listen to the Main Stage sets live from home. And for those not able to attend, as @booyouwhores reminded us, "I'm not even mad that I'm not at TomorrowLand cause in 2 months ill be at TomorrowWorld." Tickets for the Chattahoochee Hills, Georgia festival are still available.