I think that the best time to visit AMPs are when the providers are best at their game. The beginning of their work day should guarantee more favorable results, whatever time of day that may be. During evenings and late nights some providers may be off their game and past their optimal performance peak which should be your target time. Late mornings and afternoons have been pretty good for me.
What are the best times of the day that you have experienced, let's say "their optimal peak performance?
*EAT FRESH*