About starlight road....

Noob question here...When I use starlight road, is special summoning stardust dragon optional?

It is optional, but this is probably why u want to know:

from wiki:
Royal Oppression: "Royal Oppression" may negate the effect of "Starlight Road", even though it is unknown at activation whether or not "Starlight Road" will Special Summon "Stardust Dragon". "Royal Oppression" may negate the effect of "Starlight Road" even if "Stardust Dragon" may not be Special Summoned, such as if "Vanity's Fiend" is on the field or if there is no "Stardust Dragon" in the Extra Deck

Ok thanks!