Take it, and play it. And don't let it out of your sight if things start getting too rowdy.
This brings up a good discussion about "beater ukes" - are they really necessary? Many people here keep one or more around; I've got the Ohana for this very reason. Except I haven't played it or taken it out of the house since... last September, I think. I don't find myself at raucous drinking parties all that often in my old age, but I do find myself bringing my Kamaka soprano to the park and to the beach all the time. You know, exposing it to temperature changes and all those horrors. And it's fine.
When I was planning my recent trip to Hawaii, I couldn't decide which uke to bring. One of my instructors said to just bring the one I like playing the most (Kamaka concert), and I took his advice. That uke survived airports, flying, daily trips to the beach, and being unattended in a hotel room (this last thing was my biggest worry). And now that I'm back home and it's almost beach season again, it will probably accompany me there every weekend over the summer.
Of course, it helps that I have *two* of them - if I only had one main uke, I would probably keep a beater around. Or if my main uke was a one-of-a-kind custom. (Some would argue that each Kamaka is one-of-a-kind, and they would be right, but - if the worst happened, it's still pretty easily replaced.)
Anyway. Have fun at the party, and happy St. Paddy's day!