Wedding guest outfit help

[Ebokebok]

Is this ok for a wedding evening do? I'm not sure if it's more pub/club/party style. I'm very out of touch!!! I'm 52, 5'8 and size 10.

Well, I wouldn't.
I work on the theory that, as an evening guest, you are joining the party that has already begun with all the guests who were at the ceremony and wedding breakfast, so you tend to take your cue from them.
I wouldn't wear that for a wedding if I were going during the day, so therefore I wouldn't wear it if I were joining those people later in the day either.

It is a lovely dress, but I agree with your assessment it isn't quite right for the occasion.