There is so much more to do in Rhodes than drink, did you know there is the largest inhabited medieval city in Europe? Its amazing, you can walk around the castle, in the moat, through the cobbled streets!
Also don't miss Filerimos, Kamiros, Lindos, these are must see, also the butterfly valley is amazing, every year thousands of butterflies are attracted to this valley, they line the tree trunks, it s really interesting and calm, best of all no scientist can explain why they are attracted to this particular valley!
Let me know if you want more advice!