In my opinion, Dawg, President Obama is the consummate politician and liar...He will lie about anything and behave in any way to get the behavior that he wants from whomever he decides is the target du jour.
I would have to assume that he doesn't even want to be bothered on Sunday morning and will not attend anywhere if it does not become an issue...At the present, I think he will settle on the chapel at Camp David because it is remote from Washington and he will not have to attend unless he is at Camp David and then only if he has no guest...Let's watch and see if I am correct...:-)