It's called The Sunshine Park, it is a small shopping center with Publix and CVS and has a large parking lot where GW vendors have been at previous rallies.
Here is the street picture:
Attachment 11271
It is on Highway 1 South in South Daytona, not far from all the happenings on Beach Street. I hope the vendors are there again, but who knows. They may have changed their location. Last year's Bikeweek the vendors were there, but they weren't there during Biketoberfest.