5-7 day rally? That's a great goal. Just to clarify do you mean "Bi-annually" as in twice per year or do you mean biennially as in every two years?
Not a regular thing in the short term Ron I wouldn't think. It takes lots of preparation to organise something as big as 'Butt Lite' every two years, let alone twice per year.
But more rallies means more particpants which means more experience which means more available volunteers over the years hopefully.