So it appears to me that the item needs to be in an envelope. That’s what I’ve been doing with all of mine (if the recipient asks for no envelope - I’ve been using a maxicard).
This said…I’m pretty sure others have sent normal postcards without envelopes and used the Seasonal rate, and they’ve arrived just fine. The instructions seem pretty clear to me though.
I can’t find anywhere where it says that they need to be ‘Christmas’ stamps. I think any old stamps would be fine, and that if you were using domestic stamps…you’d need to add 10% more for international though…as is usually the case.
I’ve used only current Christmas stamps for mine so far this year.
I used to take that instruction at face value and not use the Christmas stamps for postcards. But last year I decided that rule was too illogical, and used them for postcards, without issue.
I sent a few Christmas rate ones a week ago, the interstate card in an envelope arrived on Friday but the other one not in an envelope but only going one suburb away hasn’t arrived…
Too early to see if the international ones arrive but I might go back to envelopes to be safe!!