記念品は欲しいので頑張りました！
じつは半年くらい前に都内でわんこそば食べたのですが、その時は70杯だったのでけっこう食べられましたね！

I wanted that commemorative souvenir, so I gave it my best!

Actually, I'd eaten wanko soba in the city about half a year earlier, and I had 70 bowls that time, so I was able to eat quite a lot!