He said his predecessor told him the hardest thing would be finding something to do every day.
"I am still waiting for that day," he laughed. "It's been 24/7, always on call."
Despite the stresses of recent years, Mr Rolston believes the 97-year-old Rotorua branch is in a good place, with 350 veterans and 410 service people. "We're in good heart, people are happy."
Mr Rolston said one of the most rewarding parts of his job had been helping veterans get welfare and war pensions they were entitled to.
He's also worked with young people at the youth remand centre and cadet forces and acted as guardian for members in rest homes.
Then there are the friendships - "it's like going to a party every day."
There have been downsides too. "The hard part is seeing so many people die. Probably 2000 RSA people have died since I have been here. I can go around and show you where they all used to sit."
Mr Rolston, who was awarded a Queen's Service Medal 11 years ago, said his only regret was not getting the RSA a new building.
In retirement he plans to "just enjoy life", spending time with family and making the most of his bach and fishing boat at Maketu.
RSA members and friends will farewell Mr Rolston at a morning tea on Tuesday.
"I will probably have a tear in my eye," he said. "I'm going to miss the place - I've been coming here every day for 23 years."
Mr Rolston said he wanted to thank the public for its generous support over the years.