If you stay at a Disney hotel, your Disney ticket can be used for multiple admissions on the same day. If children need to take a nap, they can leave Disneyland and go back to the hotel to rest during the lunch break. After the nap, they can re-enter the park to continue playing. However, please note that the specific number of admissions and rules may change, and it is recommended to check the latest regulations of Disneyland in advance.