The MFA's tough restroom policy

Andrew Watson and clan spent yesterday checking out gardens - in particular, the Fenway Victory Gardens and the Japanese Garden at the MFA - where they ran into a toddler restroom issue. No, not with the toddler in question, but with an MFA employee who told Watson he could not bring his two-year-old daughter into the men's room to wash her hands:

... Now, I can see that, at some point in Maddie's life, I won't be able to take her into a mens' room to wash her hands. But I think that point is has yet to arrive for our two-year-old. What if it had been just me and her at the museum? Had she needed a diaper change, where should I have done it? Would she be allowed to wash her hands? ...

Museum policy or idiosyncratic employee? The Watsons' MFA membership hinges on the answer.