Will preface with we've not done Universal without express in many years, so we are spoiled, and I always recommend staying at an express hotel at least 1 night, to get the 2 days of express. however, if that's not possible, and you're used to busy times at Disney, then it can be fun without. Just keep expectations real. We did spring break at Disney once...2005, and never again. But our prime travel times are Memorial day weekend/week, Thanksgiving, and Columbus day weekend, so also very busy times. we are BIG rope droppers. Like when Animal kingdom opens at 9, we're in line by 7:30, etc. We hit as many big rides as possible, in the first 2 hours, but then, you'll see the waits start being around 45-60 mins on the medium tier rides, and during spring break, it'll stay busy. YOu can also usually return in the later evening, 1 hr, maybe 2, before close, and lines should be a little shorter at a lot of things. Universal does often close earlier than Disney. Go ahead and get the Universal app, and start just tracking wait times now and again, especially over this MLK weekend, and President's Day weekend. Tracking wait times should give an idea of ride trends during the day too. Spring break will be VERY busy. Lines for everything, food, bathrooms, shops, snacks, etc. Just research the layouts of the parks, look over all the rides, maybe there are some that are not must-dos, or too thrilling, or have height requirements, have a back up plan if one goes down, etc. We spend more time at Disney than Universal, but LOVE Universal, and just had a fabulous fall break/oct trip. HP areas are SOOOOO much fun. Good luck with the planning!