1. No problem whatsoever.

2. Yes, the airport is open 24 hours. Services late at night are limited (There's a 24 hour cyber cafe). It is completely (and I mean completely) safe.

3. There are tons of good hotels a short cab ride from the airport if you want a place to crash. Check out Expedia or your favorite hotel's website.

If you want to stay in the airport, the Transit Hotel is the only option. See this thread: http://www.flyertalk.com/forum/Forum50/HTML/011228.html

Check out this thread if you want to try it without a hotel: http://www.flyertalk.com/forum/Forum81/HTML/002294.html

4. You'll get credit for ORD-SIN as if it were a non-stop.

[This message has been edited by skofarrell (edited 08-14-2002).]