Yes, you can. But, before purchasing in advance, note the following:

• Your plan will activate when your device connects to a network in a location covered by the plan.
• If you purchase a Cruise Plan, World Plan or a Regional Plan that covers your current location, your plan will activate when you download and install the eSIM. The plan expiration timer will then start counting down. If your plan activates early, please contact GigSky Customer Support at help@gigsky.com.