Can I use the same email for two different Apple ID's?

Currently Apple only allows one Apple ID at a time on a device. You could create another Apple ID to log in on your iPad and use the same credit card. However using the same Apple email will not work. Hopes this helps answering your questions. And maybe in the future Apple will open up our devices to allow more than one Apple ID. Take care.

Could you explain what your particular goals are here for this multiple-ID configuration?

Unfortunately, a common outcome of multiple Apple IDs can be a mess.

Apps and subscriptions and most media can’t be moved, which means updates will require the respective IDs.

You can create and use a second ID for, for instance, a completely separate email address. That works.

But unless you’re scrupulous around isolating purchases to one or to whatever associated group (ID) that purchase applies, or don’t purchase at all, problems and confusion tends to ensue.

Okay, so it’s an additional new iPad and not as a replacement for an existing iPad. Yes, that’ll work.

One payment card on two iPads will work. A second payment card would make the accounting somewhat easier, though.

If the laptop is a Mac, a second login (and fast user switching) (using the second Apple ID) can be enough to keep the worlds separate. Rebooting into a different partition works, but is more of a hassle.

Check with the union IT folks around their IT security recommendations, too.