When marketing in the restaurant industry it's really important to think about what the theme of your restaurant is, and tie that to the community. For instance: karaoke or trivia may not be the right kinds of events to host if your restaurant is a little classier. However, since you mentioned bar & grill, I would say that it could be beneficial for you to reach out to the beer community. Try hosting monthly tap takeovers with local breweries and talking about it on social media. The breweries will help with promoting the events and bring their fans with them.

Don't forget about professional communities either! Try hosting meet and greet networking events and collaborating with local entrepreneur groups to host their events at your bar.

I would also suggest making sure you properly update your website and maintain an events calendar. You can promote your events on sites like Eventbrite which provide you with easy ticket sale and attendee tracking. Eventbrite is free to use and can easily integrate with your website's calendar.

I hope this helps! I wish you luck with your business!