Bring plenty of beer for yourself and others, along with a gift for the host.
Just like you'd do if you were invited to a dinner party, a gentlemen brings a little something for the host or hostess. If it's at your cousins you should know what he likes. Something for the wife goes a long way!
And bring enough cigars to pass out, there will be moochers.
Have fun and don't wear your best shirt, it will get messy!
