I like going to the smaller grounds in pre-season.
1. You can get close enough to the pitch to hear the players properly. Which can be amusing
2. You can cast you eye over the trialists the declare them crap.
3. Its generally cheap to get in.
4. Usually the non-league team want to beat you so it can be semi-competative.
The Forest game will have no big name players and will be non competative tappy tappy tedium. But I may go along with a Forest fan anyway
5. (AND MOST IMPORTANT) you can drink beer whilst watching the game, hopefully in the snunshine.