Banquet Manager vs. Wedding Coordinator

So I'm confused about something (what else is new!!), what is the difference between my banquet manager and the wedding coordinator. I'm getting married at The Watermill and they made a big deal about how I'd have a coordinator (Samantha) to help me with everything. So what exactly is everything and what would a banquet manager do then? Anyone else getting married at Watermill and have some insight? TIA!!!!!