If You And Your Significant Other Were Going To Disney World, What Would You Do? Need Suggestions! 8-)?

My husband and I were invited to a wedding taking place this summer in Orlando. We don’t live near FL so if we go, we figured we might as well go to Disney World too! Neither of us have been!
The thing is, we don’t want to spend a lot of money and we wouldn’t be able to go for super long, maybe 4-5 days.
We thought a good way to do this might be to just do/see stuff that’s more geared toward couples since it’ll be just the two of us (and we’ll save the “kid” stuff for someday in the future when we have kids).
So any suggestions??? What would YOU do? Any experienced Disney-goers??? Epcot? Magic Kingdom? Any special restaurants or shows that aren’t really pricey?
Also any recommendations on where to stay? We’re definitely open to the idea of staying in a decent hotel outside of Disney in order to save the money.
Or do you all think we should pass, considering it will be the middle of summer and really busy?? There’s always another time, right?