Birthday Party Planning Guide by Age

Help me plan a birthday party. Age turning: [age], Person's interests: [hobbies/favorite things], Number of guests: [count], Budget: [amount], Venue preference: [home/rented venue/outdoor/restaurant], Date/time: [details], Season/weather considerations: [relevant factors], Dietary restrictions: [any], Parent stay requirement: [yes/no for kids parties]. Provide: Theme options with rationale, activity timeline, food and cake ideas, decoration checklist, favor suggestions, invitation wording, day-of schedule, backup plans.