6 is totally fine with me; in fact, I could do even earlier if people prefer (but certainly don't have to -- you all are traveling/sightseeing so probably need more leeway than I do!) -- or whatever works for the group.
I will just let everyone weigh in this evening on where and when!!! so everyone gets a chance if they weren't online during the day, and then if we all agree on something in some fashion, am happy to make a call for the reservation tomorrow morning.
I have not been to Frankie's, but am pretty sure Mity Nice will be not be overly boisterous -- it's a bit tucked back into the mall and more something locals know about than tourists; I don't think it's usually packed in the evening. (They were fine to still take us in, so they must not be too packed!)
Please note that I will not be offended if I'm fired and a new plan comes about -- I just wanted to offer what "local" advice that I could!