As far as CET is concerned... Specialty slots do not exist. Same with Grazie. MLife is the only one who does this and I think it was @Evoni who pointed out that you actually earn less tier points at CET than you do MLife. MLife you spend ten dollars(coin in) you get 1 "HGS point(base point) . I think it's called) but ten tier credits. I noticed this when I was playing this weekend. That although the session points were low. My tier score was jumping way up. CET you put $10 coin in and you're only earning two Tier Credits and 2 Reward Credits.