From the promo material:
We're a growing family, so we thought you'd appreciate an all you can eat Smörgåsbord at our restaurant. Come in and celebrate Christmas the Swedish way.
Swedish winters are long, dark and cold. So during Christmas, Swedes make great efforts in creating a warm and cosy atmosphere at home. The food is important. Even though there are local variations, some items are always found on the Christmas buffet!
The Christmas Smörgåsbord is an institution within Swedish culinary tradition. Many Swedes look forward to it months ahead. There are so many things on the menu that everyone is sure to find at least something they like! Feast on cold dishes such as herring and salmon, moving on to the iconic meatballs and other warm dishes before rounding off with desserts and sweets.
Price is $14.99 for Ikea Family members (free to join, usual price is $19.99)
Richmond: 11th Dec: http://www.ikea.com/au/en/store/richmond/offers_activities (Sold out)
Springvale: 11th Dec: http://www.ikea.com/au/en/store/springvale/offers_activities (Sold out)
Tempe: 2 - 20 Dec: http://www.ikea.com/au/en/store/tempe/offers_activities (book in shop)
Rhodes: 4 Dec: http://www.ikea.com/au/en/store/rhodes/offers_activities (book in shop)
Logan: Dec 12, 13, 19, 20: http://www.ikea.com/au/en/store/logan/offers_activities (New dates added, see website)
I think the ones with only one date often sell out, so book a ticket for Sweedish meatball fun.
Yar, dat th sweedish meeaaatball.