Hi.
You've probably figured this out by now, but if it helps, I just filled mine out and created an Excel template that makes it a little easier to fill out the ridiculously-tedious form.
To do it, I use the paper form. They are pretty explicit about using the exact form, which is oddly one page of Letter size and following pages of Tabloid form. I seriously hope they just were lazy and are not trying to make it harder for folks. I cut mine up into Letter size pages, which is what my printer can handle, and they can tape them together if they want.
Entering all the individual stays is the main hassle. I have no idea why they need this level of detail, as the law just requires total number of nights. Again, hopefully not some activist government worker trying to make things harder for us...but technology can get around anything they put in the way. Hopefully ABB will be automating this reporting very soon.
David