You can view the profiles of male members who have chosen to make them public. If a man whose profile isn’t public sends you an offer, you won’t be able to see it.
If you’re worried, you could simply decline offers from men who haven’t made their profiles public. However, some people use aliases and don’t post photos, so it’s also fine to meet them for a first meeting and decide afterward.
Unlike apps, men are interviewed by the club too, so it’s slightly safer than dealing with a papa you meet online.
As for the allowance: with the club, you receive both the allowance and transportation costs directly from the papa after meeting him.
With Patro, it seems you can set the transportation fee in your profile, and the club transfers that amount to you. Apparently, though, the transfer is made after the date. Please check with Patro staff for details.