not a lot to do in irvine apart from the magnum but its past it best imo.theres a restraunt right next to the magnum carpark cant remember the name but you cant not give it a try very reasonably priced too (The Ship Inn)
you are only about 10-15mins away from ayr maybe a bit more to do there
www.ayrshirescoobies.com maybe the deliverance lot will be able to help you out