I have been down to the badminton club/courts this evening, as promised to get some info. I did struggle a bit as my Thai is really inadequate!

Its quite a decent place with 6 courts, concrete floor, reasonable height, good lighting, positioned between courts. Double bank of seating for spectators, your personal fanclub or to collapse on after a game.
They asked for 150 baht, to register for membership, but not sure how long that is for, 2 photos, and a copy of my passport.
When I left about 6.30pm there were about 50/60 people present, of mixed abilities, playing or waiting for a game. and more still arriving...so its a popular place.
I didn't realise so many people played badminton in HH, I was really enthused by what I saw. Back in the UK badminton many clubs have been struggling for members & the number of teams playing in leagues is in decline.
SPAM & anyone else
19 Rai is down near queens park near to seafront. Down soi 19 to the end road bends round to right large building on right with basketball courts outside. Its a large white building with red writing. You cant miss really.
Although I am the wrong side of fifty, quite a bit rusty, with dodgy knees.... I will be giving it a go....anyone else game?
Cheers Paderborn