~GWB654~
Contact this place:
1000 Uluohia Street, Suite 309
Kapolei, Hawaii 96707
Phone: (808) 768-3003
Fax: (808) 768-3053
email: [email protected]
Ask them about places in the area that can hold an event of your size, be specific about how many maximum occupancy you will for the event, ask them what type of restrictions would be placed (noise, hours of operation, etc.). If there are no state/county owned areas that can be used, they should be able to dip into public records for you and find individually owned areas that can facilitate your needs.
As for ~mteehee~
I'd start by contacting here, and do the same process from above:
Seattle Parks and Recreation
100 Dexter Ave N Seattle, WA 98109
General Parks Information
(206) 684-4075 | TTY (206) 233-1509