it also says "please type", does your typewriter have a 10 font? if so, then i suggest using it, just make some copies so you can type it a few times and see if you have to adjust the length of what you want to say.
if you decide to cut and paste, then i would make sure that it looks as neat as possible, maybe use a glue stick or something. i imagine that it won't be a huge deal as long as you are sticking with at least a 10 font.
you could also just give them an anonymous call and ask them directly, this would probably be your best bet.
btw, i managed to have plenty of room to fit in what wanted to say, so maybe the spaces aren't quite as small as they seem? (or maybe i just didn't have much to say 😀 )