You can add her when you check in, but certainly call the hotel ahead to ask. All hotels charge extra for the 3rd and 4th person even though the room sleeps 4 (Disney and Universal). I just booked a room and used it at Universal.
Can you have more than one person in a hotel room?
Typically, a standard hotel room is designed to accommodate one or two guests. If two people want to sleep in a single bed in a hotel, there may be additional charges involved.
Can I have an extra person in my hotel room?
Can I have 3 people in a 2 person hotel room?
While most hotels allow up to two guests in a standard room, some hotels offer larger rooms or suites that can comfortably accommodate three or more people. It's important to double-check with the hotel to ensure that they can accommodate your party size.
How much does it cost to add a guest to a hotel room?
Additional person fee.Hotel room rates are based on double occupancy. You usually don't have to pay extra for kids in the room. But hotels often charge $20 to $50 per additional adult per night, Banas says.