TEETH WHITENING BEFORE MY WEDIDNG? SHOULD I?

I hear a lot of brides whitening there teeth before their wedding. I would like to do this but I have 3 weeks before my wedding date. I can`t afford the $800 1 hour procedure as seen on extreme makeovers. I want to look great for my pictures! I hear crest white strips take months for minimal results. I need another alternative. The only place I found on the internet was http://www.perfectlywhite.com
They have a 7 day procedure using laser lighting that can be done at home. Its only 60 bucks. It seems like an affordable alternative and 7 days is perfect foe me. Has anyone tried this system. If so please respond ASAP I will need to place my order. Hope to hear from someone. Please only post if you tried the product.