Oh ! and don't forget, there are many weddings at Dreams Tulum and Sandra really works long hours. It often take a few days for her to reply back !
Most people that I e-mailed wrote to me that it's pointless to plan exactly what you want now because once you get there and look around, you might change your plans ! Once you get to the resort, she will meet with you and tell you everything an give you the catalogue of things to choose (flowers, gazebo deco, meal, restaurant, music...).
Also, since I will be getting married there in December, I will write you every little details of my wedding + post some pictures. That should also help you.