We did Flower & Garden last year and are doing it again this year. We ABSOLUTELY loved it! Epcot is so beautiful. We didn't really do any specific events, but we so enjoyed just walking around and looking at all the scenery they create. Its just gorgeous. And its not just flowers and topiaries, they grow lots of fruits and veggies all over the place, we really enjoyed looking and reading everything about them as well. The food booths are great, a really fun addition. I would say if anything is a must-do, it would be strolling around the World Showcase to take in all the beauty!