Long-Term Geases & Resistance

[JCurwen3]

The rules say you get a Will roll to resist a Geas attempt at the moment you get the request from any given Lilim.

Some Geases may be long term, and sometimes the implications of the Geas (what specific future actions - or inactions - might be needed to actually complete it) may be not entirely clear. This could be especially true when the Geas is not to do something (Geases like this are mentioned somewhere, can't find where).

So, question: if someone elects not to make a Will roll to resist a Geas, because they don't see a problem with the favour, and then later realizes what it might entail and wishes to resist, are they out of luck?

I think the rules say yes, they are, in fact, out of luck. But I was just checking. Thanks!