A. 1. Limit video watching to Wi-Fi connections only. Go to Settings > Cellular and toggle off 'Cellular Data' for Zynga Poker. 2. Check the app settings for any options to reduce video quality or limit video playback.
B. 1. Consider downloading videos when on Wi-Fi for offline viewing, if the app allows it. 2. Monitor your data usage in Settings > Cellular to keep track of how much data the app is consuming.