The study comprised a prospective, comparative cross-sectional survey in 143 (of 390) children undergoing tonsil surgery. Parents answered the Post Hospitalization Behavior Questionnaire for Ambulatory Surgery (PHBQ-AS), and children answered the questionnaire Postoperative Recovery in Children (PRiC). The PHBQ-AS had positive correlation with the PRiC and with general health. On day 10 after surgery, up to one-third of the children still reported physical symptoms (PRiC). No gender or age differences concerning the items of behavior (PHBQ-AS) were found. The quality of postoperative recovery (PRiC) in girls was lower, with higher levels of nausea, dizziness, coldness, and headache compared to the boys. Children <6 years of age reported higher levels of dizziness and lower sleep quality and lower general health.