We are staying in Brussels at the hotel Meininger Saturday night. We are a family of 5 with a fair amount of luggage. We have a morning flight back to the US from the Brussels airport. Are there alternatives to the subway/train schlep? Getting from the airport was a bear, especially since the subways won't take US credit cards so all fares had to be purchased with millions of coins. If we need to go that way, how early on a Sunday does the subway operate? Are there taxi services that can handle 5 people and luggage?