At the risk of getting yelled at I'm going to fire away here...
Your question is vague, are you asking for play fields in the area (as the title would imply) or are you asking for indoor CQC arenas type places, that will allow your to pay to play on any given day?
If you are looking for the latter of the two your options are basically the ones you listed, Tac Ops or Oregon Airsoft Arena, in the area, and yes there is Tac-Tac up in Tacoma. These are the kind of place where you are going to go in any day, pay money to play airsoft with who ever else shows up with less than imaginative game styles and a First Person Shooter team mentality. Generally the guys you meet working at places like this have larger than life impression of their "mad skillz". This is usually because they have tested their skills again the hundreds of pre-teen and teenage FPS-airsofters who walk through their doors weekly. Many of these people will judge their achievements with some imaginative kill to death ratio, that can neither be confirmed or denied because he may have been shooting in the general direction when someone got hit.
In simple terms what I am saying here is you will find a younger audience at places like this, you are going to find D-bags at places like this and although they can be enjoyable and they do have their uses for tactical movement training, escape and evasion techniques, and some team building play, you're not going to find milsim or CQC training at places like this.
If you are asking about play fields there are many "in the area." However you have to keep in mind that when I say play fields I mean a place where one can safely and legally play airsoft, but may not be a venue that is open for play any day of the week without making a few phone calls, or without contacting a field representative. Some of these field are pay fields, some are not... The downside to these fields is that other people won't just show up to play. You will need to bring your friends or work out a day to go out there and post it up, like an event host. You may have also noticed that I put "in the area" in quotes. This 'area' is much larger than the city. It ranges from Salem, to a up north of Vancouver, WA. There is a field in Scapoose, St Paul, Salem, Molalla, and maybe a few others in the Portland Area.
We do what we want