If you have lots of luggage, consider a coach or taxi to Gatwick for easier boarding

https://caidentvtk424.raidersfanteamshop.com/gatwick-airport-taxi-and-private-transfer-prices-and-booking-tips-2

If you have lots of luggage, consider a coach or taxi to Gatwick for easier boarding. Trains can be crowded at peak times; board at the front or rear cars for more space.