I can confirm all promotions stack in store. i got 25% off items over $50, buy 1get 1 50% off, the free toy, and the $10 gift card! amazing!
thank you for updating your post with this info. I went to the TRU store this evening and walked away with pirate adventure island, secret agent headquarters, summer house, police harbor station and 2 take along hospital .. should have cost over $400 and it cost me $239 and got the $30 promo credit..
Also bumped into a very nice SDer in the Playmobil aisle.. my first face-to-face meetup with an SDer