When we sent out our save the dates we included hotel information in case anyone wanted to book early which a lot of people have. When we sent it out we included that if anyone plans on paying with a credit card they had a fill out a credit card authorization form and send it back to the hotel. One of my guests asked me today if they had to mail it, fax it, or email it so I talked to the venue and apparently that form is only required for large groups even though the contract we signed as otherwise. So if one person is paying for a bunch of other people then it is required. I have had some people inquire about the form, but others have not. Should I notify everyone that the form is not required or just tell them if they ask me. If you think I should notify everyone how would you recommend doing so. Email, telephone call, simply just updating our wedding website, or some other way?