Actually, the reward/point systems at CET and Seneca are quite similar. At CET, you earn reward credits, which can be used food or converted to slot play, and tier credits, which determine your card level. They are earned at the same rate, which varies depending upon location and type of play. The best rate for video poker is $10/point.
At Seneca, you earn player points, usable as comps, or convertible to slot play, and card tier points, which, like CET, determine your card level. The rate, as you have noted, is $350/point for video poker.
There is a big difference in the value of a point. At CET, a reward credit is worth only one cent, which makes the earn rate 0.1%. At Seneca, the point is worth $1, and its earn rate is 0.285%. Even though it takes a lot longer to earn a point at Seneca, the bottom line is that the system is more beneficial to the player.
You may not be aware that Seneca has a daily tier point bonus system similar, but better, than the one at CET. There are daily bonuses for 20, 30, 50 and 75 points. The bonuses are 20,60,150 and 300 respectively. It takes 2000 points annually to attain their top card. Without the bonuses, that would require a total coinin of $700,000, which is not too bad to get a top level card. But, you can reduce that total a lot if you make use of the bonuses.
As you mentioned, the Advantage Lounge is quite nice, and access to it is one of the major perks of having their top players card (both my wife and myself have one). We can each take a guest in with us.
I am curious as to who arranged the trip for you.