More than 91,000 tickets have already been sold ahead of this weekend's Heineken Cup quarter-finals.
Thomond Park - where reigning champions Munster take on the Ospreys - is already a 26,000 sell-out while Cardiff Blues have sold over 29,000 for their clash with triple champions Toulouse at the Millennium Stadium and are on track to smash the current Welsh record of 27,114 for a home Heineken Cup match.
The Blues set that mark in their Round 2 meeting with Gloucester Rugby at the same venue earlier this season.
Tickets sold for the Walkers Stadium showdown between two former Heineken Cup winners, Leicester Tigers and Bath Rugby, have topped the 24,000 mark while Harlequins are just a couple of hundred short of meeting the Twickenham Stoop capacity of 12,638 for the visit of Leinster and are confident of a full house on Sunday.
Tickets can be purchased on match day from the marquee in front of Gate 3 of the Millennium Stadium and from the Welford Road ticket office.
As part of the build-up to next month's Cardiff 2014 Heineken Cup and Amlin Challenge Cup finals weekend, ERC has joined forces with the WRU, Cardiff Blues and adidas to develop an annual grassroots community rugby programme targeting young players.
The Ulster Rugby full back, Jared Payne (No 15), has been suspended for two (2) weeks following an independent Disciplinary Hearing in Dublin arising from the Heineken Cup quarter-final match against Saracens at Ravenhill Stadium on Saturday, 5 April.