Photographer needed for event

Photographer required for a surprise Birthday party next Friday (9th December) in E14. Event is from 6 PM to 11 PM.

Reportage vintage photography style is required see example: http://iniwoo.net/inspiration/vintage-photography/)

All photographs taken are to be handed to the client with 'full rights' as these photos will have multiple use post the event e.g a book and online posting.

Any ideas to help create a good selection of photos e.g 'props' such as silly glasses would be amazing. Also, this is a celebration so the Photographer should blend into background so there's nothing formal nor anything stopping the party group enjoying themseleves.