confirm it again via email so you have it in writing. But often it is down to the person themselves, they will enforce such things when they have no need to but have a little bit of a power trip, often with venues if i deal with more than one person i get multiple responses often depending on the bitchiness level of the person i am dealing with and whether they think they are making work for themselves.
I concur with Gracefly! Some venues are very relaxed... others, well, all I can say is, if you'd seen what I'd seen...
My personal opinion is never, ever take anything as read, get it in writing! From all of your suppliers! Then there is absolutely no question.