I just signed up for Stitches East!! But I did it online and you get a conf. page. I think if the fax completes, you assume they got it. Does your machine print a fax completion page, or have a log of calls and the status?
They won't tell you exactly what classes yet- they have to assemble all the 1st second and third choices of everyone.
Most hotels don't charge you right away- they just take the CC number as a "hold" in case you don't show up. Usually you have up until a certain date/time to cancel without penalty..... I went with the first one listed on the hotel page and they said you can cancel as late as 6 pm the day of check in without penalty.
I'll be there Thursday and Friday- hope to see you there!