No, Vodafone Global Roaming/Roam-free/Roam further is mandatory for all our Pay Monthly customers (handset, SIM only and Mobile Broadband).
The daily £5 charge will only be incurred when you use your phone in a Roam-further destination i.e. send a text, make a call or check your emails. However, there isn’t a charge to receive calls or texts, so this won’t trigger the £5 daily charge.
To avoid any unexpected charges, possibly as a result of your phone using data in the background, you can turn off your data roaming (in your handset settings menu) – see our device guides section here. Additionally, you can turn data off using the 'bars' feature in My Vodafone or the My Vodafone App. Turning off data roaming will not prevent you from using Wi-Fi services.