I will be in Europe for 2 months and have signed up for the $100/month international travel plan to take effect the day I arrive in the UK. I ALSO receive one free Travel Pass day/month and currently have a few days that I want to use for a later trip. Will Verizon automatically use my Travel Plan, or will it immediately activate a Travel Pass day the minute I connect to a network in UK? And if so how can I prevent that?