CAN WE GO TO BRIGG PENSIONERS' PARTY?

It was one of those landmark occasions in life: Our first invitation to a party for PENSIONERS!
Hang on, we've still got a few months to go until we reach the big 6-0 - never mind 65.
It then struck us that when we were invited to the Brigg Servicemen's Club pensioners' Christmas Party on Monday 14th December, it was and Event Invitation from someone's Facebook. Not necessarily an invitation to attend because we are eligible to do so.
At least that's what we want to believe!
Messages of support for our interpretation will be much appreciated.
The party will run from 5pm to  10pm and include a buffet, entertainment by Bobby Penman, bingo and a raffle.