Location:
The Ball is located at the San Mateo Masonic Lodge, 100 N. Ellsworth Ave, San Mateo, CA 94401, just off US 101 north of California Hwy 92 (and the San Mateo Bridge). The facility has restrooms (whew!), a kitchen with refrigeration, small changing areas upstairs and downstairs, as well as some very nice surroundings. Oh yes, there's a dance floor, too!
Remember, you'll have to take a break between the end of the workshop at 5p and the start of singing at 7:30p. Fortunately, there is dining in the local area. Of course, there's also a restaurant list with maps that you can consult (especially if you're not familiar with the area).
Just be sure to make it back in time for singing!
Suggested Directions (you can also just check this Yahoo interactive area map):
From points South: Take US 101 north to the 3rd Avenue exit, going west into San Mateo. Follow 3rd Avenue across the railroad track and turn right on Ellsworth Avenue. The Masonic Lodge is located on the northeast corner of Ellsworth and Tilton. You may NOT park in the Congregational Church parking lot on Catalpa Avenue between Ellsworth and San Mateo.
From points North: Take 101 South to eh Poplar Avenue exit. Take Poplar West to Ellsworth, which is the first street after driving under the railroad bridge (NOT a route for trucks because of this low bridge). Turn left (south) onto Ellsworth and go to Tilton.