We are staying in Naxos for 3 nights at the end of June 2023. We won't get into Naxos until the afternoon of the first night and would like to do a Mykonos/Delos tour the next day. This would leave one full day for exploring Naxos and we are trying to decide if we need to rent a car or not. I know the island is big but I'm not sure how much ground we can/will cover in one full day. Is it worth it to rent a car for 12ish hours? Is there usually good availability this time of year at the last minute or should we book in advance?
Also, any recommendations for a day trip to Mykonos/Delos? Is it something we can do on our own or should we book it through a tour company?
Thanks in advance!