Just want to air this one. I was playing the Road to Rivendell solo (actually in Nightmare, but the same would be true of Standard mode). Quest 1A set-up states "Put Arwen Undomiel into play ... Reveal 1 card from the encounter deck per player...". The card revealed was Followed by Night ( " WR: The first player (choose 1): deals 1 damage to all allies in play and Followed by Night gains surge, or all enemies engaged with players make an immediate attack, if able" ). With no enemies engaged, I chose the latter option. When I staged during round 1, the next card revealed was a second Followed by Night - so had I chosen the first option at setup, I would have immediately lost.
Now I know that Followed by Night has different wording to some cards with a "must either X or Y" choice (where the FAQ section 1.44 states you must choose one you can do in full if able).
However, I just came across the MEC01 Online Only Rules statement (under the Effects heading):