Please ignore previous thread.
I now have the framework of a plan. It includes Palenque, Agua azul, Chichen Itza, possibly Caye Caulker and Tikal.
27th June - Fly UK-Villahermosa (requires overnight stop in Mexico City) staying here
28th June - Villahermosa - Palenque via Taxi Staying here for 3 nights visiting Palenque ruins and Agua azul
1st July - Palenque - Chichen Itza via bus (currently researching)
1st/2nd July - Staying at Chichen Itza here
5th July - Volunteering here and/or camping at Tikal, then make way back to Villahermosa for 9th July.
[ Edit: Edited on 29-May-2011, at 08:33 by glothy ]