I am planning a 13 night trip to Turkey with 2 teenage kids, ages 18 and 19 yrs. We are planning on 4 nights, Istanbul, 3 nights Cappadocia,, 1 day Pergamom , I day ephesus.

I have 4 more days, and on the last day I have to be in Marmaris to catch a ferry to Rhodes the next day.
My question is what to do in the last 4 days on caost?. I would have liked to do the 3 night Blue Voyage, but kids feel it will be boring spending 4day in a boat(We may not be able to swim much as we are travelling in May , when water temp will be 19C, thats chilly for us). So a compromise solution is to take a 1-2 night boat trip AND a 2 night stay at a beach resort(kids would like something lively with watersports and activities).But I dont think there are any 1 or 2 night boat cruises from Bodrum or Marmaris or Fethiye.(DOES ANYONE KKNOW OF 1 NIGHT CRUISE?)My research shows that its either a day's boat excursion or 3 night Blue cruise. So now I have 2 options for the 3 nights and 4 days that I have..Bodrum or fethiye/oludenze (dont like Marmaris). Inthe first option-On day 1 from Seluck take a bus to bodrum, stay there for 3 nights, on 4th day go to Marmaris for a night stay and take Rhodes ferry.Take a days boat excursion from Bodrum. Second option is on day 1, I go from seluck to fethiye(how long would be drive? 6-7 hrs?are there coaches?).Day 2 oludeniz,then take 1 night or 2night gulet from fethiye and day 4 go to Maramaris(again drive-4 hrs or boat) to stay overnight for next days rhodes ferry. I would preferthe second option of oludenze over bodrum, but this involves spending a lot of time driving. Please advise what I could do for the last 4 days of trip?
Thanks
Sonl