The last visit by a member of the British Monarch to the Royal Show was to Christchurch in 2008.
Hawke's Bay has been left off the downunder tour started by Duke and Duchess of Sussex Prince Harry and Meghan Markle in Australia this week.
At the show in Hastings yesterday, Smith said the RAS still had to "wrestle" with the desire of members to have a Royal Show in the South Island, but for now Hawke's Bay was home of "the" Royal Show.
With the showgrounds also home of the Horse of the Year Show, Hastings continues to host two of the four biggest rurally-based events in New Zealand, after the Canterbury show in Christchurch and the National Agricultural Fieldays at Mystery Creek, near Hamilton.
Smith told his audience last night he was particularly impressed by the numbers of children at the show for schools day.
"Many urban kids have no idea there is whole other world outside their suburb.
"The idea is to connect them with agriculture," he said. "This is great."