Lots of places to wild if you keep your eyes open,esp north antrim coast up and into donegal.
If you have no pets or kids the trucker ferry to warren point is cheap but takes a longer time,free meal and cabin.
I you use it then once of turn right for newcastle where there is a 5 camper bay park at bottom of town behind co cos child play zone beside the shimna river.
There is also one at the top beside the big hotel and golf course but there is talk of barriers going up there.glenarm marina is good & hustons mill in broughshane where you can do slemish mountain and the glens,best plan is to do north coast carrickfergus to bally castle via the shore and go to magilligan to get ferry over to the south ireland donegal where there are many places to wild camp and lots to see.