I've been playing a lot at Slotornado lately and am just about to reach the level 'Goldnado'. I have been assigned a vip manager and he's really making an effort in befriending me, which I find nice. For instance, on a recent withdrawal he actively went in to speed it up (even if their 3-4 hours standard pay out time is more than good enough for me and I hadn't even asked him to do so). On that particular withdrawal, I was slightly above the daily limit of 1,000 EUR but he just said "no worries, I'll make an exception" and I got the full amount!
Just the other day he came up with a fun challenge. If I would correctly pick a team I thought would advance from the WC round of 32, he would give me some free spins in return and a daily cashback deal that would increase by so and so much for each round my selected team would make it past. I went with France and shortly after their 3:0 thrashing of Sweden was concluded, I found in my account 250 FS, each with a 0.5 EUR value and a 1,000 EUR max win attached.
Now that's some special treatment right there!
Another casino - PlayAmo, where I'm at the 'Superstar' level - tend to surprise me with gifts every now and then but they don't notify me about it - I have to keep checking my account. Yesterday, I had 20 FS there - they used to be on 1 EUR but had dropped to 0.2 this time, probably since it's been a while since I deposited there. Today, I logged in again and found my balance to be 50 EUR (40x wagering). That's real nice vip treatment as well!