Yes, one doesn't get the scenery flying! Smiles. And yes, it doesn't take that long to get to the airport from most locations in Copenhagen. However, I'm one who tends to leave for the airport way in advance. And I'm also used to the possibility of flights being delayed.

When I lived in Copenhagen, I lived at Enghave station, two short S-train stops from Hovedbanegaard (main train station for those reading who don't know). So, it was easy to take the train. I'd arrive into Hovedbanegaard about 20 minutes before the train left and get off the S-train and then go to the track of the other train.

It was nice to just pack a lunch, then board the train and sit back, relax, and enjoy the scenery and also not have to deal with baggage claim at the other end and more transportation at the arrival end as airports are usually not located very central whereas train stations usually are. I traveled, from Copenhagen, to all over both Sweden and Norway by train and also to Finland by way of Stockholm and the overnight boat. I found it very relaxing. I don't find airports very relaxing. Therefore, I didn't mind the extra time. Smiles.

Happy Travels!

"Maria_T on Jul 2, 12 at 10:36pm
Thanks so much! We're taking the early train so probably taking a nap most of the time. But it'd be nice if we could talk to each other
So sitting in the lounge might be better if we can't quietly chat in the quiet room.
Thank you."

Have fun on the train. I loved taking the trains in Scandinavia as they were so nice compared to trains south of Scandinavia. Pick up some food items and pack a nice lunch. I'd always drop by the bakery and I would also make some sandwiches before I left for the train station. There's a nice bakery inside of Hovedbanegaard (main train station). I filled up on items, at that bakery, back in the summer of 2009. Enjoy! Happy Travels!

Thanks for all your comments and suggestions!
Resubmitting this part of the question again to bump it up:)
Thanks again for your help. Hoxa61 sent a link to the train seating chart. I think this is basically the same one for the train we'll be on: http://www.sj.se/content/1/c6/06/95/..._Juni12_UK.pdf
WC are the onboard washrooms. Does anyone know what B stands for?
We're probably going to be in car 3 or 4. Someone recommended that we keep our bags away from exit points and put them where we can keep an eye on them.
Are the exit/entrance to the cars basically at the beginning and end of each car diagram? So basically that section in the diagram beside the washrooms?
Are the seats with tables (2 seats facing 2) have less legroom than the ones side be side (just 2seats facing the back of the seats in front of it)?
Thanks!

The table seats have more legroom, I find. And also, there is the table that you can lean on, put your food/computer on, lie on (many people lie their face and arms down on those tables and drift into slumber), etc. One thing I'd look out for is whether or not you want to be facing the "right" way while travelling. Some people feel uncomfortable travelling "backwards", and when I booked tickets it just gave me backwards facing table seats (one window, one aisle) and I couldn't change it to make it give me forward facing seats. So, I didn't look out the window too much....I was asleep most of the time anyway.

<i>There's a nice bakery inside of Hovedbanegaard (main train station).</i>

Andersen, across the street at the Nimb hotel is even better...

Thanks Irishwhistler90. How do you ensure that you're facing 'forwards' on the train?

Just wanted to thank everyone again for all their help. We've booked our train seats. All the best. Happy travels!