Should you attend your ex's wedding? And should whatever happens in Vegas really stay in Vegas? What about wedding hashtags; are they still a thing? These are all important questions for engaged couples and wedding guests.

So, The Huffington Post decided to pose some of these questions to actors Craig Robinson, Lisa Kudrow and Wyatt Russell, stars of "Table 19." The new comedy, which co-stars Anna Kendrick, follows what happens with the hodgepodge of wedding guests seated at ... you guessed it ... Table 19.

Check out the video above to find out about the dos and don'ts of wedding etiquette.