i think your best bet is to try get a pitch in one of the large industrial estates ,you could approach the owners and ask can you set up on one of the verges ,most would be happy to have the service on there doorstep.i think mostinternal roads are private property too ,and the council arent too bothered with this type of trading.i think roadside is always a worse option as it brings up all sorts of problems,e.g. danger to road users,customers running accross the road etc. cops wont bother you in an industrial estate. plus you have a hungry workforce to feed each breakfast ,lunch .you can buy the dublin street guide map in most garages and the industrial estates are colour coded ,the new ones on the outskirts of dublin /kildare/meath/louth would be good areas to look as most older sites have people already,new parks being built each month .worth a try BEST OF LUCK !