They've been warned that things could get “quite muddy” which, judging from years gone by, is an understatement to say the least - but Glastonbury revellers are not to be deterred by a bit of rain.
Forecasters have warned of heavy downpours over the weekend, but festival-goers are refusing to let the impending weather dampen their spirits.
Exhibiting typical British stoicism, music lovers all over the country took to Twitter to express their excitement about attending the five-day musical extravaganza.
As the gates to the Somerset farm officially opened at 8am today, first-timers and die-hards alike showed that they are suited, welly-booted and raring to go.
I am SO excited 4 GLASTONBURY I don't care if it pours with rain!!!!!!!!!!!!; anna Ppp (@AnnaPlowden) June 25, 2014
Slept in the car, got up at 5.30am, queued for 3 hours, got wristbanded, tent is up - time for a pint! #Glastonbury; Lewis W (@lwescott) June 25, 2014
IM GOING TO GLASTONBURY AND YOU'RE NOT HA HA HA HA; Amybeth Taskas (@amybethtaskas) June 25, 2014
And there was one particular attendee causing quite a stir. Maisie Williams, who plays Ayra Stark in Game of Thrones, tweeted her barely concealed delight.
MORRRRNINNNGGG! I think someone's excited for Glastonbury tomorrow.; Maisie Williams (@Maisie_Williams) June 25, 2014
Cue the excitement levels of fellow festival-goers reaching new heights.
After all, who needs Metallica, Kasabian and Arcade Fire when you’ve got a Stark?
I'm going to spend my time at #Glastonbury trying to find Arya Stark!; Iron Ed Satan (@2000Adi) June 25, 2014
There was also an abundance of tweets from those not lucky enough to nab one of the 120,000 tickets that went on sale this year – more than one million people registered for the event, which sold in the record time of one hour and 27 minutes.
aah, that time of year when I get insanely jealous of everyone that's a) off to Glastonbury and b) 10 years younger than me; Jon Stokes (@JustJonnyboy) June 25, 2014
Actually depressing knowing people are on the way to Glastonbury; (Joe-P) (@JoePointer11) June 25, 2014
But other users were happy to avoid the rain and stay at home.
At 21, I should have Glastonbury FOMO. But oddly (happily), because I'd rather sleep in my bed than in a soggy tent, I don't. Not an inch.; Eleanor Doughty (@brushingboots) June 25, 2014
Am I the only person not at all interested in Glastonbury, or hearing about Glastonbury, or listening to poor quality set, from Glastonbury?; Jay Wicks (@WickWonder) June 25, 2014
This year's event will see Metallica, Kasabian and Arcade Fire headlining the world-famous musical extravaganza, with other major acts on the bill including the Black Keys, Massive Attack and Pixies.
Car parks were opened from 9pm yesterday to allow festival-goers to arrive throughout the night when traffic volumes were low, but they were not allowed to leave their cars. The gates were being opened from 8am today ahead of the main acts beginning on Friday.