The brand's six-day takeover of the Berghof Garden, a traditional Austrian tavern, is designed to promote Three customers' ability to use their smartphones in 19 countries, including Austria, without roaming charges.
Festival-goers who visit the wooden space can enjoy drinks from its bar and dance along to resident DJs Discofunk. Stars such as Norman Jay, The Cuban Brothers and Anja Schneider have so far graced its decks as headline acts.
The venue will close its doors tomorrow, when Kiss FM DJs Rickie and Melvin spin a 'Kiss Story' set of old-school anthems.
Music aside, Three also unveiled a giant model of its purple fluffy mascot, Jackson, who features in its latest ad campaign.
Brand ambassadors also held Instagram branded cutouts, where attendees could pose inside the frame wearing fancy dress. These were decorated with Three's logo and hashtags from its #holidayspam campaign.
Attendees could also meet special guests including British ski jumper Eddie 'the Eagle' Edwards, whose biopic is currently in cinemas. Cardboard masks of the skier's face were also available to wear.
The festival's organiser, Broadwick Live confirmed Three as Snowbombing's technology and communications partner earlier this year.