According to the official WDW website, there is a minibar in a standard guest room:
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Guest Rooms (Standard):
These rooms feature two queen-size beds, one day bed, table and chairs, ceiling fan, vanity area with two sinks, and bath. Most Guest Rooms offer private balcony. Many Guest Rooms feature garden or water views. Non-smoking rooms and rooms for Guests with disabilities are available.
Guest Room amenities include in-room safe, voice mail, phone in bath area, robes, hair dryer, iron and ironing board, and minibar. A limited number of refrigerators and microwaves are available on request.
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