Masquerade Wedding

We are planning a wedding for 10-20-2010 (cute date eh?) And we decided we want a masquerade reception (as it is around halloween) I was wondering if anyone had any good ideas on how to go about this. Venues, invitations, decorations.. Any ideas wold be appreciated. For those of you that have had a masquerade wedding do you have pictures? I would love to see them!! Where might I look for bulk masks? Do you also ask your bridal party to get creative masks or do you and just your groom have those. We aren`t planning a large wedding but maybe 50-60 people? We have 5 children between the two of us (3 girls - 10-7-4, and 2 boys- 8- and16 months presently) how might we help them be incorporated as well??