Over 20,000 are expected to hit the Royal Hospital Kilmainham this weekend, for the Bulmers Forbidden Fruit Festival.
Day 2 kicks off later with Bell X 1, Flying Lotus and Flaming Lips all on today's line up
We spoke to festival organiser Declan Forde:
Weather wise the weekend is set to be a wash-out, and festival goers are being warned to pack the rain gear.
Declan Forde says transport is hassle-free;
A special shuttle bus service will depart from Dame St and will be running to and from the site from 2pm on Saturday and Sunday.
LUAS: Patrons taking the Luas Red Line should disembark at Heuston Station. From there, it is a short walk to the East Gate entrance via Military Rd.
Dublin Bus: A number of Dublin Bus services stop near the grounds. There is no on site car parking.