Nap question - WWYD?

nark

S generally naps from about 2-4 (sometimes stays down until 5). We're going to a 1st birthday party tomorrow at 2. I used to take pride in how flexible she was...but not so much anymore. We had a similar scenario a few weeks back and I tried putting her down at noonish. She talked to herself for an hour - not even close to tired, and I eventually just got her up and she never napped. But then she was kind of a pain in the afternoon. Not terrible, just not great.

Any ideas or tricks for getting kids to nap earlier than they're used to? Or do I just have to suck it up and deal with the moody toddler party-crasher?