As others have said, its all down to your risk tolerance.
A busy wg will see, what, a dozen or so guys for (30mins - 1hr) in a day? So compared to a busy tube train, pub, or tesco at peek hour, the wg will be far safer than any of them.
But on the other hand, physical excretion causes heavy breathing and that is was causes the particles to spread more easily, and obviously you are in much closer proximity than while you are buying eggs and beer.
So the wg might see less people, but have a higher chance of spreading it if they do come into contact with it.
Do you want to roll the dice on weather she saw someone who was infected this week?
Personally, being in a slightly elevated risk group, I am sticking to cheaper (and safer) option of internet porn until the world calms down. At this rate, I dont expect that to be before the middle of '22, but given how badly we are handling it, and all the covidiots marching and making everything worse, probably a fair bit later.