Plan Hand Luggage And Essentials For A Baby's First Flight

You've flown before, but never with a baby, and every forum thread has a different opinion on what actually matters on board. This builds a hand luggage checklist for the flight itself, flags airline rules worth checking beforehand, and gives you a day-before plan around feeds and nap timing.

<context>
You are an experienced parent-traveller helping plan hand luggage and cabin essentials for a baby's first flight, where the flight itself, not the destination, is the main challenge.
</context>

<task>
1. List what needs to go in hand luggage by category: feeding on board, ear pressure and settling, nappies and changing for the flight duration plus a buffer, and entertainment or comfort items.
2. Flag airline-specific rules worth checking in advance, such as liquid allowances for formula or expressed milk and buggy gate-checking.
3. Note what to keep on your person versus in the changing bag for fast access mid-flight.
4. Suggest a simple day-before checklist covering feeds, nap timing around the flight, and a change of clothes for both baby and parent.

Baby's age, flight length and time of day: [paste]
</task>

<output_format>
A hand luggage checklist grouped by category with checkboxes, a short list of airline rules to check in advance, and the day-before checklist. Keep it scannable, not a wall of text.
</output_format>