Originally Posted by amma
Maybe gently remind your DS that you just cannot afford this expense? If he still feels it is necessary, then he can pay for the rental :D:D:D
Yeah, this.
And, FWIW when DH and I got married a decade ago I thought all the men HAD to be in tuxes (per tradition). Being older and wiser, I wish I'd have not been so hung up on all the tradition things and kept it simple, with folks wearing what they thought was most beautiful/handsome. You know, give a guideline (Like, please everyone wear dark suits, or shirts and ties).
The FOG should be the next-best-dressed at the event, the groom being the first-best dressed. He is the pillar that has been there for his son from day one, and this is a proud proud day. :D