It is the room block. Everything below is about that, because the catering side of a hotel wedding works like everywhere else and is priced on the cost page.
Why a room block is a financial instrument
A hotel gives you a discounted rate on a set number of rooms. In exchange you usually guarantee that a percentage of them will be paid for whether or not anyone sleeps in them. That guarantee is called attrition, and it is where couples in this county lose four figures without ever seeing a line item for it.
Three things decide what it costs you.
The block size. Set on optimism, paid on reality. The county's modeled average guest count is 166 to 176 (The Wedding Report), and a large share of a Westchester guest list lives within an hour's drive and will not stay over at all. A block sized for a destination wedding, in a county where half the guests are local, is an expensive misunderstanding.
The attrition percentage. Ask what it is, ask what it is measured against, and ask whether rooms booked by your guests outside the block, through a booking site, on points, through a corporate rate, count toward it. Frequently they do not, which means your guests can fill the hotel and you can still owe attrition.
The cutoff date. The day unbooked rooms return to the hotel at public rates. Anyone who has not booked by then pays whatever the market pays that weekend, which in White Plains during a corporate week can be considerably more than your negotiated rate. Put the cutoff on your invitation timeline as well as in the contract.
Ask for two more things in writing: whether the block can be reduced without penalty at a stated date, and what happens to attrition if the hotel sells out anyway. A hotel that resold your unused rooms and still charges you for them is a hotel with a clause you should have read.
The room block is the only part of a wedding where your guests' money counts as yours.
The food-and-beverage minimum
A hotel ballroom is usually sold against a minimum spend rather than a per-head price, which changes the whole shape of the negotiation.
Under the minimum, you pay the difference for food nobody ate. Over it, you have lost your only lever. So establish the minimum first, then work out what per-head it implies at your actual guest count, then compare that number, not the menu price, against a hall. A minimum of a given size at 171 guests is a per-head; at 120 guests it is a considerably larger per-head, and it is the reason smaller weddings often do worse in hotels than the brochure suggests.
Ask which charges count toward the minimum. Room rental frequently does not. The administrative fee frequently does not. Tax never does.
The things that only go wrong in hotels
You are not the only event. Ask what else is in the building on your date, which room it is in, and where the two guest flows cross. A bar mitzvah and a wedding sharing a pre-function corridor is a specific kind of Saturday.
Elevators and load-in. A ballroom on a second floor with two service elevators shared with housekeeping sets the pace of your entire setup, and it is why some hotels need vendors on site at 8 a.m. for a 6 p.m. start.
Getting ready rooms. Usually a guest room at a guest room rate, sometimes discounted, occasionally free, and always worth asking about before you book it separately at a rack rate.
Parking and the resort-style fees. Self-parking, valet and any per-room fee are charges to your guests, made in your name. Find out what they are and put them on the wedding website, because your guests will assume you knew.
Union rules, where they apply. They set what your outside vendors may carry, plug in or move. A band that has to be loaded in by house staff is a cost and a schedule.
Which side of the Yonkers line the hotel sits on
Hotels are the one category where you may genuinely be choosing between two municipalities with the same drive time and different tax rates. Yonkers has its own combined rate; White Plains, Rye Brook and the rest of the county share another (NYS Publication 718). The catering gap is small and we price it exactly here.
The larger point for a hotel booking is that your guests' room rates carry occupancy taxes of their own, and those are quoted to them, not to you. Ask the hotel for the all-in nightly figure a guest will actually be charged, and use that number when you tell people what the block costs.
What a hotel is genuinely better at
Weather, for one. A hotel is the only venue category in this county where the rain plan is the building. There is no tent, no alternate room debate, no walk across wet grass in the dress.
And logistics. Guests sleep upstairs from the party, which removes car service, the last-train question and the single most common cause of an early exodus. If a meaningful part of your list is traveling, that convenience is worth real money and should be weighed against a hall's lower per-head rather than dismissed as a splurge.
What a hotel is rarely better at is the room itself. Ballroom architecture is competent and anonymous, and you should budget for lighting accordingly. If the room's argument is the carpet, see it at night with the house lights where they will be set.
How we list hotels
Every listing carries seated capacity with a dance floor in the room, the pre-function and ceremony spaces as separate entries, whether the venue sells against a minimum or a per-head, a last-verified date, and a written assessment. We do not publish a minimum we have not read off a document. Our rules, in full.