Matchday activities begin in the 2,000-capacity Supporters Village from 3pm with concourse bars in all four stands open from 3.45pm. Kick-off is at 5.45pm. Activities include free face-painting, hog roast, food and drink, and more.
The Scarlets ask that supporters arrive early to alleviate congestion.
Parking is available (£3 per car) in Car Park B, with an over-flow car park and the park-and-ride service (£3) is available from 4pm at INA Schaeffler, Bynea. There is a shuttle service from Llanelli town centre bus terminal and train station. Click here for the full bus shuttle timetable.
Tickets are still available and the Parc y Scarlets ticket office is open until 7.00pm on Friday and from 9.00am on Saturday. Buy your tickets before matchday to take advantage of the discounted non-matchday price.
Scarlets operations director Jon Daniels said: "Games like this don't come around often. Parc y Scarlets was built to house such occasions and we are looking forward to a near-capacity crowd on Saturday.
"We are confident that every supporter will enjoy their visit to the stadium for this momentous occasion. Bars are opening earlier than usual in order to ensure that everyone can come along early and enjoy a fantastic afternoon of Welsh rugby."
