Unfortunately you can not either. You will need a computer that supports flash to play those games. You can find the same games in the market place that might support Facebook
You should be using the original charger. Most people jam the cord right in or jerk it out. Think of it as an important investment. Be careful and it will last a long time.
I don't know about the Gogo inflight wifi. Regarding Office, you would download and install Microsoft Office applications from the Google Play store. A paid Office 365 subscription is not included, which is what you'd need when you download the apps from the store.
This tablet does not have a SIM card slot and it is not gsm equipped. It is not set up to work for a carrier. It is specifically for wifi or tethered Internet connection
I purchased this product and it does not have any phone carrier's bloatware installed on it, which was a plus in my book. It is a Samsung, so it does have Samsung's bloatware but other than that its clean.
I had good 8GB available to me. However, anyone wanting a tab needs to purchase at least a 64GB memory card to go with it, preferably a Samsung card . That's just common sense. Even if you had full 16 GB available it would not be enough to do very much.