Questions & Answers about Vi ska resa mer än du.
Why do we use än instead of som here?
Because we are making an unequal comparison using mer (more). Än translates to "than". If we wanted to say we will travel "as much as" you, we would use the equative structure with som (as): Vi ska resa lika mycket som du.
Why does the sentence end with the subject pronoun du instead of the object pronoun dig?
In formal Swedish grammar, än connects two clauses, so the pronoun matches the subject. Än du is actually short for än du ska (than you will). However, in everyday spoken Swedish, it is extremely common to hear än dig, similar to how English speakers often say "more than me" instead of "more than I".
How do I know to use mer instead of fler for "more"?
Mer is the comparative form of mycket (much), while fler is the comparative form of många (many). Because traveling is an action and not a plural object you can count (like apples or days), we use mer.
Could we use kommer att instead of ska to say "will" here?