Hello Rsgibbon,
Welcome to the community!
Are you referring to cellular data? Wifi is only used to connect to local area networks such as at hotels, coffee shops, McDonalds, etc. and would have nothing to do with roaming or a Travel Pack.
If you're referring to cellular data, have you verified your data is enabled on your phone? Some phones also have an option to enable/disable roaming data. Have you verified that your roaming data is enabled?
If you're referring to Wifi, have you inquired whether there are any specific passwords to access the Wifi network at those locations? Additionally, some locations may require a fee to access their Wifi networks.
Hope this helps 
Cheers
