When you think of summer, you think of fireworks! / Summer in Japan meas firework displays!
Sparklers are fun but going to see the sky rockets is what summer is all about.
「打ち上げ花火」は英語で「sky rocket」か「rocket」になります。「手持ち花火」は「sparklers」といいます。
「夏といえば花火ですね!」= When you think of summer, you think of fireworks! / Summer in Japan meas firework displays!
「手持ち花火も良いですが、やっぱり打ち上げ花火を見に行くと夏を感じます。」= Sparklers are fun but going to see the sky rockets is what summer is all about.