I have been to Icmeler twice with a group of girls. You will love it! Keep your wits about you and never go anywhere on your own. Try also to stick to busier areas at night just in case. When we went out we tended to have one person carrying the money for everyone and we only ever took out as much as we needed, it was easier to go back to your room and get more than to end up being robbed of all you have!
Also, as it has been mentioned be aware of the men. The majority of them are lovely and would do anything for you but as with everywhere, there are some who arent so nice. Just dont do anything you wouldnt do whilst at home.
Hope you have a great time in Icmeler =)