The increased security measures will also affect traffic around Antrim, Crumlin, Templepatrick and Killead.
BBC: G8 summit: Airport security stepped up ahead of meeting
2.
Hundreds of people attended festivities in a number of towns and villages, including Belfast, Londonderry, Newtownards, and Templepatrick.
BBC: Royal wedding: Thousands in Northern Ireland celebrate
3.
Entitled "The Way Forward - an evidence based approach to the psychological therapies", the event will be held in Stakis Hotel in Templepatrick, not far from Belfast.