Can you do Guinness Storehouse and Book of Kells in one day?
Yes, but it is not the best one-day Dublin plan for everyone. If you do both, book one timed morning slot around Trinity, leave a proper lunch and travel buffer, then visit Guinness later in the afternoon.
Which is better for a first trip to Dublin?
Book of Kells is usually better for a first central Dublin day. Guinness Storehouse is better if your group wants a larger, more social attraction and you have enough time for the Liberties side of the city.
Is Guinness Storehouse worth it if you do not drink?
It can still be worth it for brand history, the building, and the views, but non-drinkers should only choose it if the beer theme still sounds interesting. Otherwise, Book of Kells is the safer pick.
Is Book of Kells worth it while the Old Library is being redeveloped?
Often yes, as long as you understand what is included in your ticket. The official page explains the current experience, ticket types, books on display, and Old Library redevelopment details, so check it before booking.
Should I book either attraction on arrival day?
Usually no. Arrival day is better for a flexible walk, food, and early sleep. If you land early and want a timed ticket, Book of Kells is easier to fit than Guinness because it sits in the central walking area.