What a fab honeymoon. We went to Paris for 5 nights then Disneyland Paris for 4 for our honeymoon in 2001. You'll have a great time.
As a UK resident, we stick with Orlando time as soon as we get there to get in synch with the 5 hour difference - Orlando is 5 hours behind. It's hot - I love the heat - but we need a change of clothes for every day (at least), unless you use the laundry facilities. It's hot but it can rain a lot depending on the season so rain ponchos from the pound shops are a fab investment (also useful for water rides.) Rain isn't a bad thing - it can scare others away and make for lighter crowds and the heat dries you quickly when the sun comes out. Make sure you have filled in your ESTA online and print out all your travel info and any reservations you have to keep yourself right. Bring a little first aid kit with paracetamol, plasters and things like that, as well as your sun lotion, sun glasses, spare batteries etc as these all cost a premium onsite. We bought a travel adaptor that has 4 sockets from Amazon so we could charge phones and cameras at the same time. Then research and plan - WDW is amazing and we always have a fab time but I'm an obsessive planner!!
Knowing what to expect makes everything easier.
Decide which parks you want to do on which days - the June calendar is available on the site. There are websites that will recommend which days are best to visit certain parks based on their own formulas. You could look at some of those for ideas.
Familiarise yourself with the park layout and have an idea of which attractions you want to cover and how best to do that. Use your 3 FP+ selections wisely. As a resort guest you can make 3 Fast Pass selections at 60 days out if you have a My Disney Experience account with Disney and have your resort reservation and tickets linked to your MDE account. Attractions that have high wait times throughout the day (7 Dwarves Mine Train in MK or Toy Story Mania in HS for example) are best done with FP+ as they always have the biggest wait times. Again, there are sites that will give you an idea of what FP+ to get and what kind of times you should aim for. Fast passes mean you enter the Fast Pass queue (and wait a very minimal time) rather than the normal standby queue.
I'm not a morning person and like a long lie on holiday, but Disney is the exception. You can get so much more done if you are at the parks early for opening. We go in October which is a slightly slower time and arrive at least 30 mins before opening to get through bag check and to the tapstiles. You also get to see the opening show at MK that way.
Once you've decided which parks you want to be at, you can look at restaurants. If you are looking for a sit down meal then you pretty much need an Advance Dining Reservation (ADR). Your booking time has been open for quite a while (opens 180 days in advance) so you may want to make some choices soon. Look up the menus for restaurants that catch your eye and you can book online through the Disney site.
For quick service meals we love Flametree BBQ at AK, Columbia Harbour House at MK, Sunshine Seasons at Epcot and the cupcakes at Starring Rolls in HS. Look out for the snacks throughout WDW, not just cupcakes, they are amazing. I asked for help here in compiling a list of must tries and I am determined to plough through them all! Portion sizes are big and you can save a bit of money by splitting a meal here and there. There are so many great places to eat, quick service and table service, depending on what you like and how much you want to spend.
The parks are fab - all of them - but the other resorts are too. You can't use their pools but you can have a wander round and/or eat at them. The monorail resorts are easy to get to from MK and the Boardwalk from the International Gateway exit by the UK pavilion in Epcot.
Get the honeymoon badge - it says 'Happily Ever After' - and you can get the First Visit badge too. We got chatting to a few people in lines because of badges. We wished the couple in front of us at Pirates of the Caribbean all the best because they were wearing the Happily Ever After one. We chatted the whole 20 minutes we were in the queue and it felt like only 2 minutes!
Biggest tip - get to the parks early for rope drop so that you can be through bag check and be at the turnstiles for opening to take advantage of lower early morning crowds.
Other biggest tip - Enjoy! Take time to soak up the atmosphere and have fun.
