You could do something with a Masquerade theme, if there is a large amount of people and they could then take off their masks at a determined time. This would work better if people were dancing, they could see who they were dancing with. Maybe rent out some kind of hall

My birthday is in a couple of weeks so I don't have a super long time to plan for a party.

My original idea was to get a limo and go down to Seattle with some friends and do dinner and something else there. It's January, so it's cold and I don't really know what there is to do in Seattle in the winter that would be fun for a birthday.

Oh and it will be a co-ed party.

Most people won't be 18 so a club won't work.

If you have any ideas of what to do in Seattle that would help! Or even just ideas of something else to do?

I also thought about renting a place out and just inviting a ton of people and having a dj and stuff

Thanks for your help! :)