I know of a few people planning weddings right now. Wedding planning is stressful as hell, and weddings are expensive. So when people post about their happy day, whether it be the initial "we're engaged!" announcement, or progress on their venue, etc., the appropriate response is "congratulations!" Appropriate responses do NOT include "I had better be getting an invitation!" or "I'm invited, right?"
What the fuck makes you so entitled? You're not. The couple is under no obligation to invite people to avoid hurt feelings, whether they be friends or family. Weddings are EXPENSIVE. Not only is the couple paying for venue, photographer, officiant, etc., they are paying FOR YOU to be there. You're getting a free ride on them, and if they decide not to invite current or former coworkers, distant relatives, YOUR CHILDREN, or not allow a plus one, that's their decision, because you know what? It's THEIR day, not yours. Nothing about it is about you actually.
And demanding/asking to be invited is rude as hell.
I know someone who was asked CONSTANTLY about an invitation to her special day, someone she didn't particularly want to invite, and it made her uncomfortable. Wedding planning is stressful enough to begin with, don't be the asshat that adds to the stress because YOU, as a special motherfucking snowflake, HAVE to be invited or the world ends.
If someone does you the honor of inviting you to their wedding, be gracious. And for fuck's sake, dress up. Nothing says "I don't really care" than showing up to a wedding (or a funeral, for that matter) in jeans and a t-shirt.