This is me as well - I am a morning person and am in bed before 10pm.
Personally I think that as long as 'communication' around this sort of thing is clear there should not be an issue if the provider is in their pajamas for those clients whose kids are arriving at 6am or what not - seriously some providers offer care 12 hours a day if they had to be up and 'ready' before 5 am in order to do that well they would NOT being doing it ... like me I am an early bird but I value that time to MYSELF I would not want kids here at 6am just because I am up anyway!