That's rotten OP hope you feel better soon. In the interim to cheer you up, imagine the scene, it's a major milestone birthday ending in a zero.
I've organised myself a meal out and travelled to the other end of the country where my family live so no one had to travel other than myself, DH and then ten year old son.
Told everyone about the restaurant my DM had picked in advance . No issues are raised.
Narc attention seeking sister turns up late, wearing a top that didn't cover her boobs, they are plain to see. I have flashbacks to my wedding where no one remembers what I wore just that my sister wore a see through silk dress and no bra.
I remain calm, it is my big birthday. I am determined to try to enjoy it. She won't sit down and prances around the table, shining her very particular brand of light on each guest whilst eating food off their plates because she's not hungry enough to order as she 'doesn't each much' and just wants to try a bit of everyone else's. My face remains unperturbed as she stuffs down enough food to equate to a full meal. So far, so normal. She did pretty much the same at my 21st so I expect nothing less and she delivers.
I notice another sibling has disappeared. After searching I find aforementioned sibling ensconced in the bar eating a big bowl of chips. Chips are not on the menu, I express my surprise to find sibling eating something off menu whilst sat alone. Sibling reveals that they will not under any circumstances eat the particular cuisine served and not only that several other family members won't either, they all hate this type of food that I have forced upon them.
Despite my metaphorically swan like exterior, my legs are now frantically going under the surface in an attempt to control my urge to demand why no one mentioned this minor issue prior to the do.
Shortly afterwards I pop to the loo, I come back to find siblings and their partners have entirely disappeared. I ask where they are. Everyone left looks a bit mortified. I have to be told that Narc sister has organised a limo and whipped them all off in style to go clubbing. Without me. The birthday girl, on my birthday without even saying goodbye.
Yep birthdays are shit