Not planning on any cruise or any elaborate tours .
Just wondering if 2 nights on Santa Cruz and 2 in Isabela are enough to explore the islands/most attractions .
And if time allows to take a day trip to Bartolomé … What are the options for a day trip ? Since there is no ferry I assume the only way is with a private tour company ? Is there a simple option , like just a boat that goes there and back ? Or does it have to be one with activities and such ?