芬兰出发乘船免签证游俄罗斯圣彼得堡，哪位大侠用过？

http://www.visitrussia.com/visas/visafreeentry.htm
乘游船免签证可以在俄罗斯呆三天，有大侠试过么？听说最近放宽到5天，圣彼得堡和莫斯科都可以去了。
According to the Russian Federation law, cruise passengers are the only category of tourists visiting Russia who are allowed to stay on the territory of the Russian Federation without visa for up to 72 hours.