Some opinion openers that can work well:
Here is an example – You just need to be from the same city
Hey, me and my friends are looking for a new place to host a party next week end – You look like a smart girl with plenty of night life connections 😉 – I need YOUR help on that one – Any ideas? any clubs you visited lately that you like?
If you are from another city, you can say:
We’ll be visiting Long Beach (or her town) with some friends next week end. Do you know of any good place to go out, club, cafe, etc?
You can try some of these.