Baby shower blues

I just want to vent.. Don't really need any advice... But I just want to get this out here to neutral parties.. I'm a military wife so we live in Nebraska while my husband's and my family live in Ohio and Colorado. I'm having my baby shower 2 months from now on October 8, and I decided on this date almost a month ago. As soon as I figured out a good date, I told his side of the family and my side. And both of his parents (they're separated) made me think they'll be coming... So I was super pumped. My grandparents (I lived with them my whole life) already made it clear that they couldn't come because my grandma starts chemo for breast cancer, which I find a very valid reason not to go, and I'm going to do everything I can to be there for them. Within the past few days I found out neither of my husbands parents are going, and I'm livid. His dad he's not coming because his girlfriend's daughter has her homecoming that weekend, he doesn't want to split twitch Nick's mom and wants us to himself, so he decided to come out either earlier or later... I'm pissed. Now I found out his mom isn't going by Nick's friend. She told him, but not us which is shady. She said because of the cruise in September she wants to just wait till January when my son is due to come here. I'm so upset now because they made me think they were coming and now they're not, so I won't have any of my family at my baby shower.... I might sound selfish, but to me a baby shower isn't about the gifts, it's about loved ones coming together for the life that will be brought into this world. And I'm so disappointed.