YUFENG Laser Cut Place Cards Table Name Cards For Wedding Birthday Party (60pcs black)

Can names be hand written on the white paper? The one review made it sound like it couldn't be done.

I’m having an outdoor party? Do these have weight in case of a light wind?

how do you print on the white paper ? if yes, show the steps please

Are there enough for 60 place cards in an order or does the 60 pieces mean 30 black and 30 white? I ordered two srts of 60 and I need enough for 120