Any tips I'd give you would be a bit stale as I was at Lowlands in 1993!!!
I'd a great time and resolved after it never to go to a festival in Ireland again. It had everything Irish festivals (Feile at the time and I'm told Oxygen still) didn't have like proper professional security rather than hired goons out on licence, adequate facilities, reasonably priced food and beverages, secure camping and reasonably located car parking.
1993 was a very wet summer in The Netherlands -I should know I lived in a tent for most of it as I was working "on the bulbs" over there -yet somehow Lowlands Festival managed to have ample car parking on a polder (reclaimed bit of land several meters below sea level) that didn't submerge making it neccessary to park many, many miles away and join a five hour queue for a hopelessly inadequate shuttle bus service ala Irelands best effort.
There's an old saying comes to mind "If the Dutch had Ireland they'd all be rich and if the Irish had Holland they'd all drown"
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