Are you planning to drive?
We arrived Meteora in the early evening after a visit to Delphi. We drove up into the mountains and found the whole area virtually deserted. We spent about an hour just driving the route and taking pictures of the monasteries. That would be the equivalent of the evening sunset tour. It was certainly easy to do it ourselves. I think this is a must do thing because the next day the whole place is crowded with tourists and buses. Those vantage points where I took my photos were totally taken up by buses and people.
The Monasteries that were open that next day were very crowded and we only actually got into one of them before giving up. Again no need to take a tour its simple to DIY.
We stayed n Kastraki the village at the foot of the mountains, Its proximity meant that we could get to the Monasteries before the tour buses arrived.
On our second morning it was misty so we drove through again and got some lovely photos. I guess that would be the equivalent to the morning tour.
There a number of people who seemed to be walking from one Monastery to the next one. I am lazy the car is better.
Olympia Delphi Meteora https://www.flickr.com/photos/stanbr54/sets/72157645469717811/