Hi Paul,
It's good to hear that you are planning a trip to Ireland in May. In terms of identifying suitable campsites along your route, there are a couple of relevant pages I would like to share with you. These are:
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Camping on the island of Ireland-
Camping and caravanningI would also like to share this page on the
Wild Atlantic Way, the 2,500-kilometre-long coastal road that will be able to travel along on this route.
Best regards,
Eoin