Strange start

My FH just got off the phone with his mom. She said she 'wasnt coming to the wedding because it's a young persons thing'. I'm staying optimistic and realize that Vegas is not everyones cup of tea which is why we are throwing another reception in our home state after we return.I am super understanding about life. He calls his sister to ask a question about something unrelated and ends up asking about her attendance with her daughter. She tells him she may not come because she 'may not be able to get off work'. Again, I understand! My wedding is absolutely not the most important thing in the world. She was there when he proposed in December of 2018 and generally aware of things involving the wedding. All the understanding aside, I'm still a bit sad for him since the two closest people to him maybe won't/aren't showing. Advice or positivity please. Has anyone ever dealt with this? Also I apologize if I've left out anything important.