So the first style park I'm going to talk about is the "horseshoe" layout. I think we're all familiar with this shape.
Before I get into talking about it, lets give an example (one we're mostly all familiar with) in the layout of Kings Dominion:
So to understand that this is a horseshoe, think of International Street, the Eiffel Tower, and the extending back area as the center 'empty' part of the horseshoe, along with Planet Snoopy. The other areas/lands around it create the actual horseshoe shape.
This tends to match the more current planning designs of current communities that are built, with a central shopping area (the inside of the horseshoe), a zone of high density residential, then an area of low density residential. If you want a good look at this some time, look on google maps or google earth look of Seaside Florida (yes this is the town that they used for The Truman Show).
So let's start covering some stuff:
PROS:
~ The grand entrance promenade is often BIG in parks like this. This offers a large welcoming area for park guests to get to. It also has a central navigable point in the center to always know where to head back to.
~Navigation off the main promenade is easy. You go right or left and circle the central point. But from any spot you can get back to the gate easily.
~Control of crowd flow is very easy, as you use wide walkways on the horseshoe, narrow on the "connector" paths.
Look again up at that map. IS is highly identifiable, and every coaster fits on the arch, starting with Dominator and ending at Grizzly.
CONS:
~ If the crowds do not follow your paths, you can get congestion easily. EX: At KD if crowds decide the fastest way to TT is through IS, behind the Tower, into CAG, that pathway isn't able to handle it. And then they are walking past your revenue centers in OD and SV.
~ If you complete the horseshoe, expansion means moving outward. For KD's sake, they haven't done that yet. They could do more in OD, and move their ops from right of the front gate and have a HUGE plot of land.
~ Depending of the scale of your horseshoe, it's a possibility of a LONG walk from attraction to attraction.
OTHER PARKS THAT USE THIS DESIGN:
A majority of CF parks, almost all of SF's. Lake Compounce and Kennywood, though from air they look like a horizontal bar, do go off this design in a 'squashed' manner.