6-hour layover [at LHR T5] with 5 yr old boy
Arriving in Heathrow T5 at 1:30PM from a 9h transatlantic flight, departing T5 at 9:15PM, both pax (1 adult and a 5-year old) Blue card holders so no Galleries access.
What would be your advice for the layover ? Any possibility of a pay-per-entry lounge, or any recreational facility ? A day-use room within the terminal (or within walking distance at least) ?