Hi I am very grateful and appreciative that I can post on this forum and there are nice ladies/gentlemen here to help. Thank you all!

I wake up from a very strong dream about an hour ago at about 5AM pacific time.

In my dream, I see my grandparents (both on my father's side, and both passed away a few years ago) attending a wedding. They were wearing nice formal yet celebrative dress. They appear to be happy but they didn’t talk to me. They were not angry at me or not talking to me intentionally. They just need to go to the party.
Then I see my father (who is also passed away more than 11 years ago) and he also dressed up. Later my uncle (who should be still alive) walked to the table in front of me and I knew I had some money on the table so I took my money and put it in my pocket. It was about 25-30 $20 bills. So total is about $500-$600 cash, some of them are new bills never used with serial numbers next to each other (I didn’t see it, but from the feeling of the bills I could tell) but not all of them are brand new.
I was kind angry that I wasn’t invited to this party and asked the guy next to me (I have weak feeling that it is my brother, who is alive and well) I was told it was a wedding but I didn’t get an answer why I am not invited, then I wake up.
During the whole dream it seems I totally forget that many of my folks were dead already. I was disappointed that they were attending a party of some sort but I was not invited.
Please let me know if you have questions that I can answer. Hope you could help me understand this dream. Many thanks!

Your dead family members being around you and your uncle (also a family member) giving you money makes me think that this is about the "gifts" that your family has given you -not necessarily money, but intelligence, wisdom, any talents, morality, feelings that you have about yourself, etc.

Some of the bills being old and some being new means that while a lot of who you are comes from your family, you are also an individual, independent person who can create your own path in life.

Your being angry about not being invited to the party/wedding could have to do with feeling that you have been left out of something.

Are you going through a stage in your life where you are thinking about changes that are taking place in your life or about what your future will hold for you? That could make you think about how you have become the person that you are.