From my rebuy experience all i will say is that it is as much of a tournament to see who can rebuy the most, as it is to see who the better poker players are.
But seriously. I would not say 5x to rebuy add on. Maybe nore hopefully less. Whe they say loosen up that dont mean the K5s and the real jusnk hands but more of the suited connectors and the 1 and sometimes 2 gap connectors. Hope this helps