In anticipation of the ACT's biggest annual all-ages event, curious passers-by were treated to free fairy floss, snow cones and carousel rides.

Annastashya Moglia, 5, and her mother Melissa Moglia were one of many families who dropped past for a pink snow cone and to pat the animals.

"I like the sheep because they are so woolly," Annastashya said.

Royal National Capital Agricultural Society president Stephen Beer estimated more than 5000 livestock would be at the Canberra show this year, among many other attractions.

"There's over a hundred things to do at the show," Mr Beer said.

"There's something for everybody, whether you want family fun or you're interested in farming, fashion or food."

The three-day event is likely to attract up to 100,000 visitors.

"If the community would get behind that, we can achieve that," Mr Beer said.

Major corporate sponsor, ActewAGL, is again on board after an almost two decade association with the show.

"I think shows are just an important part of the fabric of any community," ActewAGL spokesman Paul Walshe said.

"The Canberra show is one of the best, if not the best…and we want to be a part of it."

The Royal Canberra Show takes place on the last weekend of February at Exhibition Park.

Discounted tickets and ride coupons for the show are on sale at ActewAGL sales outlets in Civic and Fyshwick until February 26.