you can check in at 3pm. I would have your reservation noted that you will be checking in late. If you are staying concierge you will be in the Hawaii longhouse. If not there are several others and depending on what view you book garden, lagoon, or MK view that will effect what longhouse you can request.
the following info is from tikimans site
http://tikiman2001.homestead.com/map.html
[FONT=Arial, Helvetica, sans-serif]Lagoon V[/FONT][FONT=Arial, Helvetica, sans-serif]ie[/FONT][FONT=Arial, Helvetica, sans-serif]w[/FONT][FONT=Arial, Helvetica, sans-serif] rooms are rooms that are facing the [/FONT][FONT=Arial, Helvetica, sans-serif]Magic Kingdom[/FONT][FONT=Arial, Helvetica, sans-serif] or the Seven Seas Lagoon but may have the castle partly or fully blocked[/FONT][FONT=Arial, Helvetica, sans-serif].[/FONT][FONT=Arial, Helvetica, sans-serif] Some are blocked partly by foliage (mostly ground level rooms), tree-tops (mostly 3rd floor rooms) or blocked by Beachcombers Island off the shore of the Polynesian (rooms in Tuvalu).[/FONT]
[FONT=Arial, Helvetica, sans-serif]Magic Kingdom View[/FONT][FONT=Arial, Helvetica, sans-serif] (new as of 2006) are lagoon view rooms with unobstructed views of the castle. See longhouse pages for Aotearoa, Tuvalu and Tahiti for a list of Magic Kingdom View rooms. All other rooms on the lagoon side of these buildings are considered[/FONT][FONT=Arial, Helvetica, sans-serif]Lagoon View[/FONT]
[FONT=Arial, Helvetica, sans-serif]Garden View[/FONT][FONT=Arial, Helvetica, sans-serif] rooms are all rooms except lagoon view rooms. Your view in a garden view room could be anything from a partial view of the lagoon, a pool view, a marina view, a view of the garden areas, a monorail view or a parking lot view.[/FONT]
[FONT=Arial, Helvetica, sans-serif]There were many questions when the [/FONT][FONT=Arial, Helvetica, sans-serif]Magic Kingdom View[/FONT][FONT=Arial, Helvetica, sans-serif] was introduced and I had my own concerns. After finding out more about it I believe it is a good thing. The rooms that were selected to be [/FONT][FONT=Arial, Helvetica, sans-serif]Magic Kingdom View[/FONT][FONT=Arial, Helvetica, sans-serif] were selected because they have an unobstructed view of the castle. The price for these rooms are about the same as a [/FONT][FONT=Arial, Helvetica, sans-serif]Garden View[/FONT][FONT=Arial, Helvetica, sans-serif]Concierge[/FONT][FONT=Arial, Helvetica, sans-serif] room and in the past that is what a standard [/FONT][FONT=Arial, Helvetica, sans-serif]Lagoon View[/FONT][FONT=Arial, Helvetica, sans-serif] room cost. Now a standard Lagoon View room cost less than a [/FONT][FONT=Arial, Helvetica, sans-serif]Garden View[/FONT][FONT=Arial, Helvetica, sans-serif]Concierge[/FONT][FONT=Arial, Helvetica, sans-serif] room. Also there are a small handfull of [/FONT][FONT=Arial, Helvetica, sans-serif]Lagoon View[/FONT][FONT=Arial, Helvetica, sans-serif] rooms that have quite a few plants blocking the view but most of the remaining [/FONT][FONT=Arial, Helvetica, sans-serif]Lagoon View[/FONT][FONT=Arial, Helvetica, sans-serif] rooms still have a great view and infact many still have a view of the castle. Below is a photo of a room in Tahiti that is considered a [/FONT][FONT=Arial, Helvetica, sans-serif]Lagoon View[/FONT][FONT=Arial, Helvetica, sans-serif] room and not a [/FONT][FONT=Arial, Helvetica, sans-serif]Magic Kingdom View [/FONT][FONT=Arial, Helvetica, sans-serif]and as you can see the castle is still visable. [/FONT]