Jackie,
Somehow I think that with 10 ladies on a Hen Week you’ll have a ball no matter which bars you go in !
I think you’ve made an ideal choice in PDC with a mixed range of ages, there is something for everyone. Centro Atlantico is the lively area, but it’s quite small, maybe around 20 bars / clubs but a good variety of places from Irish Bars (Nancy Spain) to Live Music (Charlies Bar) to clubs (Liquid, Hippodrome, Big Apple) and if you want a good laugh be sure to try Ricks Bar (
http://www.ricksbar.net). But that’s just Centro Atlantico, there’s loads of other places along the strip as well as the Old Town and loads of good restaurants.
Have a great time.
Ole