Das Ist Lustig can be found at the following restaurants: 

Regularly at Rudi Lechner's in Houston, Texas. 

Periodically at King's Biergarten in Pearland, Texas.

Periodically at Bavarian Brauhaus in Bryan, Texas.

When they go on tour out of state, they look for restaurants along the way where they can drop in and play a show or two.  They've entertained at Turek's Tavern in Choctaw, OK, Siegi's Restaurant in Tulsa, OK, the Hofbrau Beer Garden in Panama City Beach, FL and the Old Stein Inn in Edgewater MD.  The food and service at each of these locations was excellent and most likely still is.  German beer and gemutlichkeit are always flowing.
Rudi lechner banner draft 1

Rudi Lechner's Restaurant
  Live Music Wednesdays, Fridays and Saturdays!
Entertainment Schedule 2018:
Fri 30 Auf Geht's
Sat 31 Wolf and Mike
Wed, Fri  4, 6 Auf Geht's
Sat 7 Bub Suttie and Mike Gest
Wed 11 Bob Suttie and Mike Gest
Fri 13 Wolf and Mike Gest 
Sat 14 Wolf and Blair
Wed 18 Bob Suttie and Mike Gest
Fri 20 Wolf and Bill
Sat Auf Geht's
Wed 25 Auf Geht's
Fri - Sat 27-28 TBA
Wed, Fri 2, 4 Das Ist Lustig
Sat 5 Bob Suttie and Richard
Wed 9 Auf Geht's
Fri 11 Wolf and Bill
Sat 12 Auf Geht's
Wed 16 Bob Suttie and Mike Gest
Fri - Sat 18-19 Wolf and Bill
Wed 23  Das Ist Lustig
Fri - Sat 25-26 TBA

schedule subject to change