My favorite times to shoot the Everglades are February and March. Temperatures are bearable, nature is beginning to bloom and there are migrating and nesting birds everywhere!  Three great tips I have learned over the years include:

• Fly into Ft. Lauderdale Airport:  The airport is about 30 - 45 minutes further than flying into Miami but WOW does it make your travel experience less hectic!  Flying into this much smaller airport makes arriving and departing a breeze in comparison to Miami International.
• Stay in Homestead Florida: I have found this area to be a great central location for shooting in and around the park.
• Find a Good Air BnB: I find it less expensive and more comfy than staying in a hotel, especially on photography trips. (the extra room allows me to set up an office area for editing and wifi things instead of sharing my bed with my gear)  

Several of my favorite spots to shoot are shown here on this map of Everglades National Park: 

Anhinga Trail and Gumbo Gumbo Limbo Trail are just inside the park entrance.  And as you venture on down toward Flamingo Marina (which is a GREAT place to see lots of Manatee swimming around the docks) there is Pa-ha-okee overlook where I didn't see much wildlife but was great for the classic sweeping view of the Everglades. The drive from the entrance all the way to Flamingo Marina is breathtaking and you never know what kind of wildlife you will stumble upon when you least expect it! And, last but not least, is Shark Valley Wildlife Refuge.  I recommend this location for morning light photography since soon after lunchtime the wildlife shooting along the canal is mostly shaded.