I don't know about where you are, but around here I see lots of places with individual turnout, granted its to a small paddock, not a pasture. Pasture turnout is typically with a group.
I would absolutely ask for a copy of the boarding contract before agreeing to board anywhere and read it carefully, asking for clarification on any points you're confused about.
Other things to consider, not all places allow outside coaches or trainers, so if you have any intention of bringing one in, make sure its ok ahead of time. Also ask about their worming and vaccination requirements, both for your own information and for the safety and health of your horse. (ie, if they don't have strict enough requirements in your estimation, are some of the horses yours will be in contact with going without and therefore endangering your horse?)