Tradução - Holandês-Turco - Ga jij ook dit jaar gay rride.

Indeed, it's a question, but the original is not grammatical (not the verb is missing, but the preposition "naar". In Turkish, hence, it should be "gidiyor musun" rather than "gidiyorsun".

Now that I'm having a look at it again, shouldn't it also be 'ride'na' or something? or is ride'a ok?

sender means gay pride ofcourse

but it's not gay pride, but gay ride..

"Bu sene sende mi gay- ride'a gidiyorsun?" demektir. Birisi senle dalga gecmeye calismis bence kardes, Gay-ride nedir biliyormusun bilmiyorum.