Originally Posted by
ancman
G is correct in this case. F (and the associated pay) would only apply if the first day of your GS was on a LC day, and you accepted it with <18 hours notice.
Small point, but it’s more accurate to say “earlier than required availability”. IOW, you can accept a F#1 40 hours prior to report for a “GS” rotation which reports at, say 0900 on your first day of reserve.
Often, this only makes sense in the OP’s situation: the last opportunity to get anything, so it’s that or nothing.
Edit: tennis beat me to it. What he said.