Many thanks to @Keanuital for the heads up!
IMDb is showing that Destination Wedding will be released on August 24, 2018. It is listed as a limited release so chances of seeing it on the big screen are slim.
The date should sound familiar as it is the same day that Replicas will be released. Guess they will kill two birds with one stone and promote both films at the same time.
The test screening garnered a very positive response from the audience according to those who were there so the news of a limited release is disappointing.