Thank you both for the advise. and just as a FYI, with the first one, I simply didn't trust my intuition. It is always right, but sometimes I fail to listen to it. I think we all do that once in a while.
You only need to include the waiver letter with your petition. That's it!
This is similar to what I wrote for my waiver request letter (taken from this post: http://www.visajourney.com/forums/topic/509146-waiver-for-multiple-fiance-filings/?p=7177435 )
RE: General Waiver for multiple filers
To Whom It May Concern:
In compliance with the International Marriage Broker Regulation Act (IMBRA), I respectfully request a waiver on the filing limitations in connection with my current petition. A waiver is appropriate in my circumstance because I have no criminal history with regard to the “specified crimes” under IMBRA.
I have one prior approved Form I-129F for [NAME], receipt number [RECEIPT #]. This petition was approved on [DATE], and resulted in...
Evidence to support this waiver includes:
[YOUR EVIDENCE]
Thank you for your kind consideration of my request.
Sincerely,