I took a netbook on a 3 month trip and here's my experence:
-Netbook has much better durability, this is the #1 reason I'd recommend it over a tablet to all users
-Netbook is much more versatile as far as being feature rich, especially for what you've stated you're doing
-Netbooks aren't cool...but when you're doing things the tablet people can't, then they shut up pretty quick.
-STORAGE...I assume you'll be taking a few photos, videos, etc....well tablets will fill up pretty darn quick and it's nice having somewhere to back up your SDHC cards to in case they get stolen/lost/damaged.

So yeah, ultrabook or netbook hands-down is the way to go!