My son and I will be visiting Denmark in spring next year and and will be staying in a home without access to wifi. Does anyone have any experience in whether we can sign up for 3 weeks deal that allows us to use a thai sim card for a 4G internet connection. Advice would be appreciated. 

You can activate roaming on Thai sim but it will cost an absolute fortune using that method.

 

Better to buy a local sim/package in Denmark.

 

A quick internet search shows sim &internet PKG in Denmark about 800 baht for 30 days.

Sim2fly may be the answer??? I used it in Europe for 2 weeks last year, it was great. You can extend it beyond 15 days, scroll down for the info.

 

 

http://www.ais.co.th/roaming/sim2fly/en/