Pros:
Quiet park, very low traffic by golfers or even walkers and runners.
Main tees for each hole are easy to find.
Course is technical. Water in play on two holes (sometimes more, depending on tide and weather).
Discs that go into the water are not too hard to find. If you know where your disc is, come back when the tide is low, and be willing to wade in the mud, and you should find it.
Basket placements are generally very interesting. Some holes favor lefties or flicks more than RHBH throwers, which is unusual for a small neighborhood course like this.
Course flows very well from the main tees. Hole 1 starts right by the parking area and the park sign, you can't miss it. Hole 9 finishes just around the corner.
Lots of shade on about half of the course.
Elevation! The hills here are part of what makes this a 3.0 instead of a 2.5 for me. Unfortunately, the best hill at the park is only used for alternate tee boxes, and there is no official tee box at the top. But there are multiple pins all visible from the hill, so you can stand up there and throw down hill on all points of the compass!
City of Seabrook has a good parks department. Basket 4 is missing at the time I am writing this but I expect they will replace it. They have been timely with responding to vandalism in the past.
You might see some rabbits or even a group of deer here.
Cons:
Most tee boxes are gravel and can get slippery.
Half of of the alternate teeboxes are somewhat "commando" and really only playable by locals or course regulars.
Holes 1 and 2 have tight fairways partly because of the public swimming pool and residential area to the right. Stray shots will definitely go over the fences.
Lots of brush (Depending on time of year) can make losing discs common. If you don't have great control on your drive, come expecting to maybe lose a disc or two. If that bothers you, don't come here at all.
Some of the brush has nasty thorns.
No water fountain/bathroom nearby. There is a bathroom at the skate park across the street but last time I tried to use it it was locked up in the middle of the day.
Mosquitoes.... oh the mosquitos.
Other Thoughts:
This generally is not a good course for beginners, especially if they are playing alone. If they have an experienced friend or "course guide" with them then they should give it a shot. There is just too much to frustrate you here if you can't keep it in the fairway.
That being said, playing a good round here is really fun and I almost always enjoy this course now.
For non-locals, I would not recommend driving a long way to Seabrook just to play Miramar. Maybe if you are exploring other things in the area, like NASA or the Kemah Boardwalk or Clear Lake, then it might be worth a stop. Or if you are playing a few courses in our part of town in one day - Taylor Lake Village, Bayou Bend, or Jenkins.
Plan ahead and bring some bug spray, and maybe a cheap floating disc, and you will have a good time.