I'd overlooked the fact that today is actually the Summer Solstice (according to the BBC, anyway), due to the leap year, but it looks as if the druids won't be at Stonehenge until tomorrow.
Price doesn't matter once it's mixed and consumed with a good measure of Woods 100% Rum. When the police find you wandering aimlessly(& Neked) in the early hours, blame it on the Solstice, & start humming Sex & Drugs & Rock & Roll. They'll understand.