I think you might find you are getting the full 150 per day, although not necessarily from 'watching' videos. A few days ago I had exactly x,400 credits when I went to bed. The next morning when I came to watch the videos I noticed my credits had gone up to x,406. I haven't a clue where the 6 credits came from, but when I checked My Account from my profile page it showed I had watched 3 videos... which I hadnt! Anyway, after watching the videos my total stopped at x,550, meaning I only got 144 from the videos I did watch, total 150cr for the day.
This morning a similar thing happened; my credit balance last night was x,025, but this morning it was x,033. Again, checking My Account showed I had watched 4 videos (again, I hadn't), hence the 8 extra credits. And then watching the videos gave me another 142 credits, total once again 150cr.
What I don't understand is why it is happening, because I'm definitely not watching those few videos. I wonder if it has something to do with playing? But that wouldn't explain why I got 6 credits first time and 8 the second time, because both days I had played 1 x 9-hole and 1 x 18-hole bracket games.
Don't get me wrong, I'm not complaining, I'd be happy if they paid all 150 credits without me watching the videos :)