It depends on your daughter and Son-Law's circumstances. Maybe they genuinely couldn't afford to give you the lavish expensive day you think you had the right to have, maybe a soup cake and drink is all they could afford to give you.
Be grateful you have a family.
Both my parents, who I never really knew and got on with anyway have been dead for god knows how many years, I literally have no other family - no brothers/sisters, aunts/uncles, no cousins etc. etc., absolutely NOBODY. I'm happily married but child-free by choice, my husband is the only family I have, and he's by law, not blood.
Please count your blessings and start growing up.