Both is possible. I do sometimes make vacations unplanned with no return flight ticket and just enjoy the time there as long as I feel to. But then there are s

Both is possible. I do sometimes make vacations unplanned with no return flight ticket and just enjoy the time there as long as I feel to. But then there are specialized holidays, where you need people to be with you. One example is my hobby being a diver. Going on a private diving safari needs planning and documents. Depending where you go are the documents, but you still need a boat, a crew and a dive guide and/or trainer. It's still very enjoyable for me, as I love diving, but it also needs planning.