Thanks for the reply on splitting pre-sale code. I don't think i will do it though, I just don't trust computer systems.
Regarding ticket limits, this is the quote from the Ticketmaster event page. The same statement is on each event, so it depends on your interpretation of the english language i guess
Strict ticket limit of 2 per person, credit card, household. Any multiple orders will be cancelled without notification
Please adhere to published ticket limits. Persons who exceed the ticket limit may have any or all of their order(s) and tickets cancelled without prior no