Can I have more than one tablet on the same email account? I have two tablets for each of my kids and I set them both up with my email account on the app store to get them games. But when trying to use the PC to choose the games for me it will only let me select one of the tablets and not both.

Do I need to have to separate accounts for each of them or is there a way around it?
Yes you can have multiple devices on one email account. When using the Play Store from the PC, it will give you the option of which device you want the app installed to. Once selected, the app will take a few minutes to download and install (depending on Internet reception). After that you can install that same app on ANY other devices you have.

I currently am using a total of 13 devices on one email account for Google Play Store. That's Android on PC, laptops, tablets, Android TV box, and several smartphones. Remember you always can decide which apps you want to install to which device.

Here are some references


ask-ac-can-i-install-android-apps-more-one-device
can-i-use-multiple-android-devices-with-a-single-google-account
how-to-share-google-play-apps-music-and-more-between-android-devices/
how-many-devices-does-one-purchase-of-android-app-support