Tickets for the Singha Premiership Rugby 7s Series at BT Sport Cardiff Arms Park go off sale at the Liberty Stadium Ticket Office at 4pm on Thursday afternoon.
That is the final time that that 2016/17 Ospreys season members will be able to claim their complimentary ticket for the event which gets underway at 7pm on Friday night, when the Scarlets face the Blues, before the Ospreys take on the Dragons in their opening fixture 25 minutes later.
What promises to be an exciting evening of rugby with the four Welsh regions once again going head-to-head, the action due to draw to a conclusion at around 9.35pm.
Last year's event saw winners the Dragons, runners-up the Scarlets and the Ospreys in third, all winning two of their three matches, bonus points needed to separate the sides in the final table.
The winners and runners-up on the night will go through to the Singha Premiership Rugby 7s Series Final at the Ricoh Arena in Coventry on Sunday 7th August.
Tickets for Friday are priced at £10 for adults, £5 for concessions, and can be purchased from the Liberty Stadium Ticket Office and online until 4pm on Thursday, or direct from the Blues Box Office on Friday.
Ospreys 2016/17 season members are entitled to free entry for this event but need to pre-bought their ticket from the Liberty Stadium Ticket Office by the 4pm Thursday deadline.
There will be no free entry on the night without a pre-bought ticket.