Pros:
Acorn is a course that has suffered from it's popularity. As one of the old guard disc golf courses in the metro, all of the following ailments plague the course; lack of maintenance is an understatement, overcrowding (understatement), vandalism (for a good time call your mom) and litter. Beyond these characteristics that many older courses ail from, Acorn is a well designed, enjoyable course. It may lack some of the qualifiers that championship courses have these days, but it's a fun round regardless.
Acorn has great hole variety for the time it was made. Hole one starts off an easy shot over the grossest pond in the metro. I've played acorn a lot over 10 years, I don't think I've ever seen the water remotely translucent. So what could be an easy hole gets your nerves going a little bit. From there on holes alternate up and down hills, close and far range, in clearings and wooded areas.
Concrete pads- it's got them, not always the best shape, but there.
Open year round - you figure it out.
Alternative pin locations - It's nice to have things change up a bit on a course that is well known.
Cons:
Pace- Acorn is a course I find to have really bad pace. With the amount of players that move through there, there are some places for major backups. At least at most places of the most common back-ups there are makeshift benches to enjoy a refreshing drink and smoke.
Hole 4&5 are kinda garbage holes - Two shorties in a row that lead to what point 1) major backups.
The kidz - It's crowded, sometimes with folks that may not be familiar with proper disc etiquette or punks that need to be put down. I'm a fan of the classic helmet line "fire a warning shot across their nose" and if you happen to fire up it instead of across it, claim to be an asshole and play through.
Signage - is non-existent. Luckily, unless it's -20 there will probably be someone in front of you to show you where to go, just watch out for 3/10 mixup.
Pads- Signage Some of the pads really need help, and the pro tee on 12 needs to become more official.
Other Thoughts:
Acorn is a fun course, but I tend to stick away from it during peak hours of the season. Late in the year the traffic tends to die off considerably, sallys.
Also Fairway Flierz is a nice dg store about a mile away and the gas station on the corner of rice and c sells gottago discs.