When I was at the post office the other day, I realized that I've been at the post office more in the past 3 months than I have in my entire life. I also have purchased more stamps that I ever thought possible. I have decided that the post office is behind all these rules and etiquette standards.
All the things you need in an invitation was designed by the post office to make sure that you spend the most money imaginable to mail out your invites. You need to send a thank you card to everyone in order to make more money for the post office! Now depending on who you are and your crowd, you could get away with an email, but there are some that really frown on that.
Since we got engaged I have sent out save the date cards, wedding invitations, thank you cards (for all gifts received), and rehearsal dinner invites!
Back in February I contemplated buying $200 worth of stamps to have enough for everything. But when I found out my invites were only going to cost $.42, I nixed that idea. Wow, I wish I would have. Not because stamps are expensive (in the grand scheme of things they really aren't), but because I hate schlepping to the post office every other day for stamps. I could order then online but I usually need them right now.
Sigh, yes, these are things I have to complain about. I should consider myself lucky.