Whether they are feather or fancy or black or blue, many times they will not write if they are new. (ha - it rhymes!) I am talking about pens with your guest book.
Every bride has this fancy pen with her beautiful guest book for people to sign, but the pen never seems to write. Time is taken up by everyone looking into their purses for a pen that will write. I don't know if the problem is with the type of paper in the guest book or if the pens are just too new, but issues arise. I guess it could be that they run out of ink.
I know with a new Bic pen, I have to scribble it a little before it will start to write. I would assume the same would work with the fancy pens. If it doesn't have enough ink, you could provide more than one pen for people to use. I really don't have a good solution - maybe some wedding planners will chime in.... after all, I am just a videographer, a very observant videographer.