To cut or not to cut?

Hair... What do you think?  I have grown it out for December's wedding, which is now come and past (nearly a month!) and my hair is long.  I enjoy it for pony tails, but seriously how many days out of the week is it ok to wear a pony tail as a 30-something?  The curly hair thing saves me a day or two also, but that gets a little big.... Thoughts anyone????