Stayed at the Q for a two minute drive next morning to border parking lot, three times different years. Never heard about the $10 for 3 nights until now, so will look out for that and ask next time. Typically we only stay ON one night, once for two nights for extra work. It's great to O/N to get Los Algodones stuff done the next day.
FWIW, and YMMV: Last time we were at the Q, this past Sep, we decided to have supper with them, food was awful, cold and took for ever on service, and they were insistent that you had to be a resident in a hotel room to gain access to the wifi and totally refused. Being Canadian, and having an expensive USA travel add on, we didn't want to be charged Mexican rates which it was picking up on our phones there. They'd rather forego your spending a few hundred bucks as many couples do in the Casino than allow you internet access. Have to say that the Q and one other Casino we didn't even stay at were overall very rude. Their loss not ours - our dollars can quite happily go elsewhere where they are shown appreciation as is the norm. NEXT!