Normally I'm a super huge fan of Land & Sea vacations. We did a 3day Dream last year that was UNREAL but went fast (but it was a spur of the moment with 1 park hopping day prior) so 4 days of Disney AWESOME magic.
So we decided we loved the cruise and wanted a sea day and part of our group wouldn't go longer than 4 days. So we did a 4 Day Magic and added 1 day at DisneyQuest/DTD (poured and poured rain but our friends had a great day at MK anyway), and a base day at Hollywood studios, than had our 4 day cruise, on debarkation day Friday we went to SeaWorld and the last day Saturday we went to Epcot.
I should caution that while I thought we did everything we were looking to do on our 4 day cruise, so that length of cruise was fine for us (plus we were excited to go back into the parks so the trip wasn't over), I will caution that thanks to Disney's new FAST PASS PLUS system, we had a VERY difficult time fitting everything in that we wanted at the parks. Every single line was stupid ridiculous and the Tier system means you now have to choose Rockin Roller Coaster OR Toy Story Mania. That meant while we could fast pass the one, we had no less than an 80 min wait on the other (and that was at 7:45 at night!) We also didn't hop at all, and the parks WERE ridiculously busy because it was just before the Star Wars weekends (although there was still Star Wars stuff going on? So not sure how it wasn't the weekends but they were warming up or something?) and because of cheer leading competitions and SeaWorld oddly had school kids EVERY WHERE!!!!
So I would now caution that splitting our week into part Sea part Land is probably not a good option anymore. You almost need a solid week or like 5 park days now thanks to their new roll out. Who knows, maybe they will get it right. But I have NEVER seen anything like it, even Figment at EP has 40 min waits! I asked a CM what was up with all the lines EVERY where and without hesitating one second, he said it was the new fast pass system.
Last year, with single rider lines (which they closed when we were there because 'it was too busy', how can it be too busy for single rider lines?!) and old legacy FP-s, we were able to hop to ALL the parks AND have dinner. This year, we couldn't even get everything we wanted in ONE park on ONE day!
So I'm no longer looking to split the trip up, although it WAS my favorite way to experience Disney (so I'm glad we did it two trips in 2013 before the FP+ roll out). I'm now looking to get a great deal on a
Disney Cruise and ONLY do a Disney cruise at somepoint. But I don't feel like I ABSOLUTELY MUST go on another Disney cruise after the Magic, (not like I did after the Dream, I was a psycho about it!) so I feel like I have experienced what I needed for Disney cruising just for now. I didn't feel have any regrets and miss anything on board. For that, I say a 4 day is probably a GREAT bet.
On the other hand, I'm left already MISSING WDW because while the 4 Day Magic allowed us to do just about everything we were looking to do on the Disney cruise, we definitely felt like it was unfinished business in the parks! But I won't be back to WDW until they figure out to get rid of the stupid tiers and can work out their crowd management which is horrible! Instead, we will fly out to
DisneyLAND where we have since found they have all our favorite rides PLUS new ones and NO FAST PAST PLUS system! Thank goodness. Hoping for a purely PARKS Land Trip next November but I can't even start planning it because airfare and hotels aren't out yet.
REALLY excited about going out there for the first time. It won't have World Showcase, but we did get that this year. Otherwise, WDW can keep FP+ and their stupid 40 min lines on Spaceship Earth!!! (I do LOVE SSE, but 40 mins?! When did THAT happen? When FP+ started!)
I used to think Land and Sea was the STUFF, but what I'm seeing now is that they really ARE better for the most part in two separate trips. Than you make the most financially of where you are (either on the cruise or putting all the time and financial resources into a great parks vacation.) We might even try to stay on property or a Disney sponsored property, whereas I was getting major hotel deals because we were paying for a Cruise AND a land trip.
In the future, I wouldn't combine it (other than like a day at Ep just before the cruise or something when you come in early.)
I have really changed my tune based on our experience this trip! WDW, why oh why? I did TWO Land & Sea trips in 2013 and never thought I would change my opinion about that!