We definitely prefer to park hop! It keeps our options wide open, to how we want to do things, or to accommodate things that might force us to change things, (such as weather, or if we have to change things if one of us isn't feeling well, or we missed something, want to do something again, and more). Even if we don't plan to hop we can decide to change things up at the last minute if we want to. Generally we usually only hop between two parks in one day, though I think we've done 3 parks once or twice.
We'd definitely feel more stressed not having that option to hop and being stuck in only one place. Being able to hop is something we plan, and also allows spontaneity! Is it ever a little crazy or stressful? Well I suppose sometimes, when we definitely want to still hop, but are running behind or we are cutting things close and have to rush a bit. If we choose, we can always change plans so that works. But, 95% of the time the hopping works out and we're happy to have that choice! We do try to keep Adr's in a particular park on the day we are doing that park. Occasionally we've gone to EP mainly for an Adr, but mostly try to keep things easier by doing restaurants that are in the park we are planning on. Sometimes that's guided by the restaurant choice, sometimes we pick after we've decided the park.