@@jayejayelynn
How did guests know about your wedding if you didn't send STDs?
I think it is a matter of personal preference. I knew I wanted to incorporate a luggage tag, passport, and airline ticket. Therefore, I made & sent STDs that were luggage tag magnets. I sent them 1 year before the wedding date so guests were aware and had plenty of time to prepare & save up money to go. (I smile every time I see them on a friend's refrigerator.)
Then I sent passport invitations along with boarding ticket rsvp cards (I made the rsvp's too) 9 months before the date. This still gave people time to lock in a good rate. It's an all inclusive resort.
If it is not a burden to your budget, send the std for the sake of being considerate to your guests' planning - taking off work, paying deposits, booking early for better rates.
Also I have a best friend who is coming with her husband to my destination wedding. She also received another invitation to a family friend's DW in Jamaica during the same month. She passed on the other person's because she had received my invitation early and had already committed to me. I feel so lucky I sent mine first!
Remember, the earlier you send info about your event, the more likely your guests will be able to attend! We have 50 people and counting...