Just another unsolicited idea to save some money...
There are people who are members of Disney's time share program, which is called The Disney Vacation Club. Some people opt to rent out their points any year they don't plan on going to WDW. It usually costs you 10 or 11 dollars a point to rent them...
Why do I bring this up? Because, for about the same price as getting a standard room at the Poly for a week in September (which is an awesome resort, beautiful, I'm not putting it down), you could rent a DVC member's points and get a one-bedroom villa in the Beach Club Villas, the Boardwalk Villas (preferred views, standard view would be even less), or the Wilderness Lodge villas. Beach Club & Boardwalk are walking distance from Epcot, and Wilderness Lodge is a ferry ride away from the Magic Kingdom, with some views of the Seven Seas Lagoon where you could see the Water Pageant and maybe even Wishes (maybe? Confirmation, anyone?) And in that one-bedroom villa, you'd have a seperate living area, a full kitchen (in case you're too tired to get up for breakfast, meow), and a Jacuzzi whirpool tub in your bedroom (to make you too tired for breakfast the next morning, double meow). Plus, it you still wanted to cut corners, having the kitchen might allow you to make an occasional meal in the room, saving money on food.
You could stay in a one-bedroom villa with comparable amenities for even less money in Saratoga Springs or Old Key West. Saratoga Springs is nice, though I don't know how romantic it is. OKW is, for my money, more romantic because it's more isolated, but that means no awesome views (though it does have ferry service to Downtown Disney).
Sorry if I've given you too many unnecessary options. The Poly does accept DVC points, but at a much higher exchange since the Poly isn't a DVC resort, which means it wouldn't save you any money to rent points to spend on the Poly. To your original question, count me in amongst those recommending you at least split up the honeymoon. PO-R is beautiful, my favorite of the mods, but the outside walkways means you're always more prone to hear noise, and people outside are more prone to hear you (again, I say, meow). Indoor walkways at least afford you a little more privacy, because only people going to and from their rooms should be in the hallways. And it's nice to split up the vacation anyway. When you're at the Poly you can do more MK and Epcot based stuff thanks to the monorail, and you can save MGM & AK & DTD stuff when you're at PO-R (Riverside also has a ferry to Downtown Disney/Pleasure Island).
Sounds kind of silly to not want to spend time in your room on your honeymoon, huh? 
