I purchased tickets for the Sagrada Familia from the official Sagrada Familia website because I heard that was the safer way to get a ticket. However, I am seeing "skip the line tickets" advertised by websites like Viator.com. Does this mean I will have to wait in line for a long time before I am able to enter even with buying my ticket ahead of time? If so, how early should you get in line for a 1pm tour time?
If I remember correctly, your ticket should have a time stamp on it. They will not let you in before that time.
Right. But does this mean I’ll be waiting in line with people trying to buy tickets that day? So if my ticket is for 1pm, do I have to get in line so I’m at the front by 1pm? Does that make sense
No. People who already have time tickets do not wait behind people who are trying to buy tickets. The "skip-the-line ticket" language is scammy. At nearly all sights, any timed ticket is a skip-the-line ticket.
You've done all you can to expedite entry into the church. There may be a bit of a wait because of crowd control, but I don't think you'll have a signficant issue. Showing up a little early will probably get you nearer the front of the line for people sharing your entry time.