I love that you and your BF are going to be walking arm-in-arm - I think it's very sweet!
Since you haven't been in a while, a few things to know:
First of all, make sure that you all understand how RoTR works to get a Boarding Group, and set the expectation with your BF that not everyone who wants one, gets one. It's my understanding that it's still stupidly crowded at Park open when the Boarding Groups open, and you have to be inside the Park to even try to get in (with both of you there, if you want to ride together!)
Disney World is just more crowded now in general, so remember that when planning, and allow extra time to navigate within the Parks. There are fewer benches and places to sit (overall), so be prepared for that. They always make it look like you will have the whole place to yourself in the commercials, and that is just pure fantasy these days!
Remember that First Aid can be helpful, and there is a First Aid station in each Park. They have generic Tylenol, and they can offer a calm, quiet place if y'all need a serious sensory break.
Be sure to download (and use!) the My Disney Experience app - it's really great, and has updated Parks maps, mobile ordering for almost every Quick Service now, and of course you can manage Fast Passes, see Photo Pass photos and more.
Bag check is mandatory before you enter any Park, and all bags must be searched. If you need to carry medical supplies into the Parks, I recommend putting them in clear zip-lock bags, and that way the Security CMs can see what's there but don't have to maybe touch your supplies. They wear gloves, but don't change them between Guests (can you imagine how many pairs of gloves that would be in a day? WOW!) so I try to minimize the contact by putting all of my "stuff" into zippy bags!
Disney Springs is *amazing* now - there are SO many new places to see, and it's SO much bigger! The Marketplace end (where the old drop-off bus stop was) is physically about the same, but everything else is quite different - including Planet Hollywood! We love to spend time there, especially for brunches and late dinners, and of course, shopping!
I hope that you and your BF have the very best trip you can - don't worry if it's not "perfect", because just being with the person you love at Disney World is perfect! And if you don't get to ride everything y'all want to, or maybe you don't get to see a show, or some other attraction? You have a great excuse to start planning your next trip together, and looking forward to making more great memories - together! ❤
Come back and let us know how your trip went!