For clarification- Orca Enterprises does not run the above tour and is the booking agent. No discounts usually for mulitours. Exception would be going double with them, twice I stayed on their boat for a repeat whale watch, also scheduled another double trip for May. Second trip is half price. But this is best for a full day in port and die hard whale watchers.
Way too much to see and do in Juneau for the first couple visits.