You're welcome @Iris2.
Just remember you are only charged for the the days you use O2 Travel, so use Wifi wherever you can.
Talk to Family and friends via Messenger and Whatsapp, just make sure they have those apps installed.
Turn Voicemail off before you go. If someone wants you they will call again. Turn off by dialling 1760. When back in the UK turn it back on by dialling 1750.
Veritas Numquam Perit