Question- hotel info cards

I like the idea of them. Didnt originally think of them yet. I dont want to send them out with invites b/c thats too late i feel. Iam giving some save the dates at the e-party next month. The rest probably will go out in may. Should I send them with them then? I think it is a great idea! I cant get a price for the hotel till a year before anyway..

when should i send them?