More than 20 clubs and organisations attended a Welsh Rugby Union meeting over its crackdown on ticket "touting".
Champagne galore as Wales celebrate their 2005 Grand Slam
The sale of clubs' international tickets for inflated prices on the streets and particularly on online auction sites is being targeted.
A decision is now expected on Tuesday on action against any club, debenture holder or body falling foul of policy.
But the WRU said no action would be taken against 10 "extremely helpful" clubs and organisations.
The WRU announced its tough new policy earlier this year in an attempt to ensure that tickets reached what it called genuine rugby fans and not the highest bidder.
But earlier this month it emerged that tickets for all Wales' 2006 Six Nations games were already on sale on the internet.
The WRU has said that many of the tickets put up for sale were those allocated to some of Wales' rugby clubs and bodies.
If clubs' tickets are found to be re-sold, the WRU said sanctions could include withdrawing all tickets in some cases.
But the WRU has now reviewed the cases of a number of clubs and organisations and said they would face no action after helping the WRU investigation.
They are: Llandudno, Gorseinon, Resolven, Cwmgwrach, Caldicot, Narberth, Rhydyfelin, Welsh Districts, Brecon and Trebanos.
Millennium Stadium chief executive Paul Sergeant said: "This issue is something we intend to remain tough on indefinitely.
"The structures are in place to pinpoint those who disregard the ticket policy and already we have isolated those who have offended and now action will be taken.
"Loyal fans and supporters buy tickets in good faith at face value and it is imperative that those tickets remain within the hands of the intended recipients of the tickets.
"A number of clubs have been contacted regarding their allocation and a number of these have been extremely helpful in locating specific tickets that have gone on sale on website auction sites.
"Those who have not assisted in finding the culprits will be asked to present their facts to the review panel."