Thanks to you guys for all the replies. If anyone has anything additional to add, please do so by all means.

All the replies have been very good, and he won't be a UM, as shown by Akiestar, so I guess he can explore the airports a bit. I take from all your replies that being a UM can be a lot of fun, and especially on an international business class reservation.

He has a 2.5 hour layover in Brussels and a 8.5 hour layover in Mumbai, but the only one that I worry about for him is the Mumbai one. I don't know how he is a *G, but I intend to find out at some time today.

Thanks Again,
AY