Thoughts on NOT getting a Save the Date card but being invited to the wedding?

So we hear ALL about DH's cousin wedding plans from his mother and how aunts cannot wait to see Molly...and then MIL shows me a beautiful STD card and magnet...hum...looks familiar , but anyway, we don't get one What the heck? And the best part is the wedding is in Canada and all of the travel info is on the STD card. So I say to DH, maybe (secretly wishing) we are not being invited. So DH calls his mom and mentions that we never got a card and we have NO travel info for this wedding, maybe we are not invited. MIL calls her sister and confirms that we are invited. Are these people raised by wolves? How do they expect me to make reservations at the hotel if I don't have the info. We live in NY....MIL is in MA. Why don't they send STD cards to all their invited guests. Is MIL suppose to call me with info and I am suppose to guess it?