Heathrow overnight transit options with a 5 year old?
In two weeks, my 5-year-old and I are scheduled to fly in to LHR via American, Terminal 3, arriving 10 45pm, and leaving the next morning also via American (but operated by British Air) out of Terminal 5, at 9 30am.
Concerns:
1) I do not carry a credit card. I could arrange for a prepaid charge card, but am otherwise limited to my debit cards or cash.
2) I can't find anything on the airport site about whether the inter-terminal shuttles shut down at some point, or run 24 hours.
What are my options for the two of us to get some rest, but still get to the check in counter on time in the morning? The cheaper the better.
Many thanks in advance.