Which lake are you at? I live in Carrollton and use Lake Lewisville or Grapevine as my playgrounds.
If you have any type of traps (sink, waste, etc.) those may freeze. Any water lines that supply fresh water to the sink, etc. may freeze and the water in your fresh water tank may freeze depending on its location.
The "cold ones" will probably not freeze since it won't get cold enough for long enough to make them freeze. Best bet on those is to consume them immediately.
Opportunity is missed by most people because it is dressed in overalls and looks like work.