Gloucestershire expecting record crowd for Somerset clash
More than 11,000 are expected to watch Michael Klinger's team take on their local rivals and that will make it the best attended domestic fixture at the ground.
Fans are therefore being urged to buy their tickets in advance as no tickets will be available to buy on the gates on the day.
And there is more good attendance news for Gloucestershire as 3,000 more people are expected to watch the One-Day International between England and Sri Lanka on 26th June than last year's ODI thanks to additional seating being put in place.
Gloucestershire CEO Will Brown believes the chance to watch the first ever floodlit West Country derby is one of the reasons for the upsurge in ticket sales.
"Gloucestershire v Somerset is one of the great sporting rivalries and having it here at the Brightside Ground, under our new floodlights will only add to the atmosphere," he said.
"The lights have also allowed us to push our start times back to 6.30pm this year which has helped ensure more people are able to get here after work – not just from within Bristol but from Gloucestershire as a whole.
"Friday night T20s in Bristol are always wonderful occasions and with two great rivals going head-to-head, this promises to be one of the most exciting matches we have ever staged."
The match pits Gloucestershire's Australian international fast bowler Andrew Tye against Somerset's West Indian batsman Chris Gayle in one of a series of interesting match-ups.
As a result of the ticket sales, Nevill Road - the street outside the ground - will be closed from 2pm until one hour after play and supporters are advised to use public transport to get to the ground.
© Cricket World 2016