Pros:
Fun Layout... Seymour offers a pretty fun round of golf. The course winds its way around a tree-filled park with some minor elevation. Pretty standard park golf, many holes are similar with some sort of slight elevation change and trees to contend with. A small creek comes into play on a handful of holes, but nothing too major. It is easy to navigate without a map.
Alternate Tees... One thing I really liked about Seymour is the fact that it has an alternate tee for every hole. The course is fun but not all THAT challenging to an experienced golfer. So beginning players on up to intermediate will enjoy the shorter pads, while advanced and pro golfers will have more fun on the longer pads. The longer pads to add a significant challenge and alters the approach you take to several of the holes.
Park Atmosphere... Seymour Smith is a nice city park. There is some very nice playground equipment, a nice softball facility, a large skate park and a shooting range. Plenty of parking is available. It is also located at a big intersection, so it isn't too hard to find. There are restrooms at the park and food/beverage close by.
Cons:
Playing Atmosphere... This is an extremely busy course. Up until very recently it was the only legit full length disc golf course in Omaha, a metro area with over 835,000 people. While there are now more options in the area, they are still somewhat unknown outside the hardcore golfers. The vast majority of people playing here will be of the rec-1-2 disc-200 ft drive variety. There is often a line to start at the first tee. I usually skip ahead a few holes and slip in front of a slow group. Speaking of groups, I've seen huge groups of 10-20 people playing here before... can take a long time to get a round in. Lots of smokin' and drinkin' going on. I can't say I've seen anywhere else with as many people carrying/pulling coolers full of beer as they play. If possible, play the course during a week-day in the morning for a quiet round. afternoons/evenings and weekends it is crazy.
Vandalism... This course isn't in a bad part of town, but there is a lot of vandalism present. Several tee pads and signs have graffiti on them, and beer cans/bottles can be found easily. The local club has had problems with basket vandalizing as well in this park.
Wear & Tear... this is an older course and as busy as it is, the course is wearing down. some fairways have little grass left from all the people walking down them, and grass is worn away from several of the basket locations. This causes it to get muddy if it rains or snows. Tee signs and pars are outdated, and some pads and baskets are getting worn out.
Other Thoughts:
This course is worth a trip to play, just plan on a long round if it is a nice day or the weekend. If it is crazy busy when you pull into the parking lot, consider hitting up Aspen Park, a small 9 hole course just down the road that is almost always quiet. Seymour is a fun course despite waiting at tees and a worn-out feel, a solid course for all skill-levels.