@jensenbreck, you should call them and check on your plan and find out about any extra charges that might be incurred using the phone in the USVI. Verizon is not a regular service provider here; ATT and Sprint are. Your Verizon phone will very likely work, as others have said their's worked in the past, but it will work on another providers tower so its possible you will pay more for those minutes and data because its roaming. Call Verizon to see what they say and to find out if there are any plan adjustments you could make to cover the time you are on island. 

I would like to hear from Verizon customers too.  I'm coming January for two months and want to have correct plan.  In past years, I have purchased the $40/month international plan for 100 minutes talk, 100 texts and 100 MB of data and I've had no additional charges.  (A $85 plan is also available for international calls, etc. - for 250 minutes/texts/data.)  I have also used the Pay As You Go plan for short-term stays.  I've never been charged extra for using Sprint or other USVI towers.     I have no idea what to expect this year.

I have Verizon and it never really worked on the islands.  I bought a Trac phone specifically to use in the USVI and it worked very well.  I just have inform all my friends and family back home to use my other phone number if they need to get a hold of me.  I also put the number on the voice mail message on my Verizon phone.  Love the Trac phone for just phone calls.  No monthly Fee and they always have deals on buying minutes.