All in all, not a lot of time is spent hugging the Alaskan Coast in day time during your sailing. On the 1st full day at sea, you're '' at sea '' heading towrads Yucatan Bay and onward to Hubbard Glacier, afternoon. Once in the bay, viewlines are equally astounding port & starboard. On the three por days, you enter channels early a.m. and, again, the approach to various ports offer viewing from both sides of the ship, and you spend most of the daytime in port.The last day before Vancouver is spend in the BC inside passage, tremendous views whichever side you're on.
As Norm pointed out, you're very likely to be either in the lounge, deck #11 or outside on many of the various decks to see stuff.
IOW: it really does not matter which side your stateroom is.
The approach to Vancouver is actually better enjoyed starboard, if you're up around 6.00-ish. As regards the saiaway from Seward, whichever side you're on, it's fabulous.