I have spent 2 five week periods in Irelend touring. You are in for a treat. If you want a quiet site away from the madding crowd and you have just disembarked at Rosslare, head north of wexfor town to the trading post. Paddy Power the owner will give you a great welcome. it is well placed for the local places to see and is just opposite a great pub. Take a torch if yu intend staying after dark. Travel on tto the orchard site in tipperary county between clonmel and Cahir. Excellent and they sell their own cider etc. They only charge per person.
Kerry of course I stayed at Flesh Muckross Killarney next to the gleneagles hotel right on the doorstep of the national park. You will find all the sites good and a day or two on the ring of Kerry and then the Dingle peninsula will set you up for the year no matter what you passion.
I also stayed at Blarney site 5 miles north of Cork city again a great spot for golf , cycling etc.
West coast and county Clare
Doolin I stayed right out by the sea (Cant remember the name of the site but it was next to the ocean and a 9 hole golf course).
On up to Knock Caavan site as a base for galway, and county Mayo - try Wesport and Matt Molloys pub for a spot of traditional music.
Avoid Shankill Dublin but I'm biased because I like to stay in the sticks mainly
I'm form the north originally so I stay in relatives fields but if you want a great site go to the new caravan and camping club site near Killyleigh County Down. Take in the magic of the mournes Strangford lough newcastle and the ards peninsula. Have a meal in the Slaney Inn Raholp great value and soak up St Patricks country
Anyway if you discover any other gems let me know