Pimms No 1 and cucumber sandwiches will be de rigueur when the club meets from 5.30pm.
Revellers were invited to come dressed as their favourite tennis player from the last 100 years.
The best dressed male and female will win a magnum of wine each.
Life membership presentations will be made to five players for outstanding services to the club.
An exhibition match will be played by club coaches Lan Bale and Mark Milburn, with Wanaka Tennis Club coach Perry Crockett and Dunedin coach Jeff Elliotte, from 6.30pm.
A ball and signed and framed photograph of world number one Rafael Nadal with certificate of authenticity, as well as a photograph and T-shirt signed by eight Grand Slam winner Andre Agassi, and a case of wine from actor Sam Neill's Two Paddocks vineyard will be auctioned.
The celebration will also usher in the third annual Queenstown Tennis Club Open tournament, which is on tomorrow and Sunday from 9am.
Wakatipu will be well represented with 20 players competing.
A further 30 from Central Otago, Dunedin, Invercargill, Christchurch and Auckland will also participate.
Crockett, a former professional on the Futures circuit, is the top seed in the tournament and one to watch.
Christchurch player Tuscany Hamel will return to defend her Women's Open victory of last year.
Spectators are welcome to enjoy the matches, which will be played on the club's four courts, nestled in the serene Queenstown Gardens, and the Wakatipu High School's four courts.
President Teresa Chapman said the club was going from strength to strength, with more than 100 paid members, 73 juniors up to 18 years of age plus about 260 casual players on its books.
A trio of coaches were teaching more than 1200 pupils in schools and camps across the district.
"The energy and enthusiasm of its stalwart members is the backbone of the club.
"We're very fortunate to have the foresight of those early Queenstowners who gifted the gardens as a reserve to the community.
"Over the last 100 years, many people and businesses have done their damnedest to get their hands on it, and have been thwarted by old-time locals, friends of the gardens who saw the need to protect this green space in the centre of town."
More than a century of tennis
Tennis has been played in Queenstown for more than a century, with one of the earliest mentions found in the Otago Witness, dated March 10, 1883.
The newspaper reported the Acclimatisation Society gave a piece of their "prettily situated" land near Silver Lake to a lawn tennis court.
Silver Lake is better known today as the recreation ground next to the Queenstown Memorial Hall.
The first Queenstown and Arrowtown Tennis Club match was held in changeable weather in January 1886, with the Wakatipu players emerging victorious.
The Otago Witness recorded that Queenstown club members decided to form an asphalt court, provided enough members agreed to pay increased subscription, in October 1908.
The Queenstown Gardens Bowling and Tennis Pavilion opened in November 1908 and it is believed the tennis club moved to the new facility soon after.
Lakes District Museum archivist and researcher Karen Swaine said she welcomed feedback from Queenstown Times readers in order to update the information held about the Queenstown Tennis Club.
"Additional photographs would be great. We can scan them for our collection so that people can keep their originals."
- With thanks to the Lakes District Museum, in Arrowtown.
