Can You Say "will Be Getting Married"
"Can You Say 'will Be Getting Married'"
You certainly can. This is simply the future progressive of get married. But it's the verb get that counts here, not married.
It is a standard feature of English verbs:
have a party
he is having a party
he will be having a party
go to the movies
they are going to the movies
they will be going to the movies