I hadn't heard of that - only the injection that lasts a month (or whatever). What I can say is that if I was starting this again, I would actually consider doing the month shot for the first month and then going to the oral after that, just because I barely had any AF days anyway so it was a moot point. It may just be easier, depending on how hard you find it to wait. You may also just want to take it every day an hour before you may drink, and not worry about it - just keep an eye on the time and be sure to take a 'top up' dose if you go longer than 10 hours between your Nal and when you stop drinking.
Bottom line - looking back I would do whatever is easiest and most effective at first - the finessing can come later.
Jephiner