Will I need a visa
Thanks for your question!
From the date of July 1st, 2016 to over the date of June 30th, 2017: Vietnam government continues to give out 15 days visa exemption policy for citizens from 5 countries: Kingdom of Great Britain, Republic of France, Federal Republic of Germany, Kingdom of Spain and Republic of Italy.
If you are going to enter Vietnam in Oct/2017, you need to apply visa and you can apply on our website for visa on arrival at this link: https://www.vietnam-evisa.org/apply-visa.html
It will be counted from the date you enter Vienam.
You are going to enter on Jun/26 so you will not need visa if staying in Vietnam within 15 days