Unforgettabl*************
@Pamela *******
There’s no “activation” period for multiple entry visas such as the DTV. The visa is active from the date of issue so if you enter for the first time a year after the visa is issued the only difference is that you’ll have a year less left on the visa.
This notion comes from a number of single entry visas which are valid for 90 days from the date of issue so you have to enter within 3 months otherwise the visa expires.