What the OP can do is if he doesn't want to create account in all these casinos,
he can start reading the thread of each reputable and known casinos in this forum.
There are so many discussions that he can already get an idea how the casino is operating like if your deposit will be converted to USD or not.
He can also directly ask on the thread if he is not into reading all the posts, and for sure, someone will answer his query.
This is the advantage in this forum. You can have direct contact also with their respective reps if you can't get a hold of them via site chat support.
Or, instead of browsing through existing forum topics to find an answer, he can also create a new forum topic specifically for his question. This will ensure that his question will be seen and answered by members of the community who are knowledgeable about that specific subject. In addition, by creating a new topic, other members with similar questions may also benefit from the discussion. There's nothing inherently wrong with this approach, in fact, it's the correct way to use an online forum platforms.