KathyNYC2 said: "Just curious....not trying to make a judgement about this at all. Do actors have the right to "refuse" an alternate? Is it part of the contract? Are they in charge of their own characters? "
That is a good question, and I'm looking up the answer now (though someone may already know the answer). I know that in the case of a "star"' (i.e. NPH in Hedwig), the actor has the right to refuse an understudy (which NPH did). According to that rule (#73 in the recently expired contract - the only one I have on me at the moment), they only mention that all contracted roles except for stars and bit parts have to be covered by an understudy. No mention of alternates and right of refusal.
Also, someone mentioned that this is Brightman's first Broadway role. Just to clarify, it is his first leading role, and probably easily his most taxing.