Hi, Yes the Falstaff session is on this Sat,lunchtime until teatime. The Falstaff is in King St, just by it's junction with Portland St (that's beside the Prince of Wales Hotel, Lord St).
The Sat sessions at the Falstaff are usually on the 1st Sat in the month & the Monday night sessions at the Guest House, Union St, are usually on the 3rd Mon in the month. Check the diary page on the Bothy website for any changes.
Cheers
Les