Apologies, I see that this question has been asked before but I'm getting confused. We're arriving at Barcelona airport around 11am on Sunday, and from what I understand we can get on the train at the airport, transfer at Barcelona Sants(?) to the R1 line and from there on to Pineda de Mar. My question is, what kind of ticket do I need? My hotel website is telling me that a single ticket should be around 5 euros...is that right? That seems ridiculously cheap. I keep seeing people mention these T-10 tickets but from what I can tell they're more expensive, are they for multiple journeys? It definitely seems like I'll only be on the R1 and R2 lines, is it a 5 zone ticket I need then?
We do plan on going in to Barcelona for at least one day, possibly two, so am I cheaper getting a multi-ticket trip? Would the ATM tickets end up better for travel within Barcelona?