hi samba . dont think you would be able to go in and pay for drinks as you go as they are only geared up for A/I and I dont believe there were any till facilities . They do have security on the gate but not sure how efficient they are. It may be worth emailing them though as you may be able to buy a type of day A/I pass. . you should be able to find an email address here
http://www.suncity.com.tr/

Thanks very much - will do!