江戸時代は、法的に火の取り扱いに厳しい。その中でも諏訪神社にて手筒花火の祭りが許されたのは、ここが関所が設置された宿場町であったことに所以がある。関所を守ってくれる地元民への労いと、不満解消の意味もあったと推測されている。
During the Edo period, there were strict legal regulations regarding the handling of fire. Even amidst these circumstances, the reason why the handheld 
fireworks festival was permitted at Suwa Shrine is because it was a post town 
where a checkpoint was established. It is surmised that this also served to show appreciation toward the local residents who guarded the checkpoint, as well as 
to address their grievances.
大会の事前に、遠州手筒花火とスターマインの間に、当日使用した遠州手筒花火の筒の無料配布整理券を、希望者にお渡しするとの放送が流れていた。とあるYouTubeの話では有料と聞いていたのだが、観客の少ない悪天候のためであろうか。まあ、こんな劣悪な環境で鑑賞したのだから、戦利品として是非とも持って帰りたい。少ない観客のせいか、元々希望者が少ないからのかは分からないが、案外あっさりと獲得できた。
Prior to the event, an announcement was made that, between the handheld 
fireworks and rapid-fire fireworks, numbered tickets to get the handheld 
fireworks tubes used on the day would be distributed free of charge to those 
who want it. According to a YouTube video I watched, I heard that we had to 
pay to get the handheld fireworks, but perhaps it was because of the bad 
weather and the small number of spectators. Well, since I watched it in such 
terrible conditions, I definitely want to take it home as a souvenir. I don't know if   it was because there were few spectators or few other people interested, but I 
was able to acquire it easily.

整理券の裏には、この筒は縁起物で、魔除け、厄除け、無病息災、商売繁盛の御利益があると記載されていた。
On the back of the numbered ticket, it was noted that this tube is a lucky charm, believed to offer benefits such as warding off evil and misfortune, ensuring good health, and bringing prosperity to one’s business.
一息置いて、後半の打ち上げ花火になる。スターマインが見所との触れ込みであった。切なさの漂うポップな歌が流れ始めると、突然、多色の直線的な花火が無数、打ち上げられる。曲調に合わせて、花火の筋が真っ黒な虚空を彩る。
After a short break, the second half of the aerial fireworks began. The highlight was advertised as the rapid-fire fireworks. As a melancholic yet upbeat pop 
song began to play, countless colorful, linear fireworks were suddenly launched into the sky. In time with the music, streaks of fireworks illuminate the 
pitch-black sky.

スターマインとは”速射連発の花火”と定義されているが、花火の打ち上げがコンピューターで緻密に制御されている昨今では判断が難しいようである。原則、花火の形態や種類を問わず、3秒以内で連続的に打ち上げられるのがスターマインだと理解されている、とのことであった。
In Japan, these rapidly fired, successive fireworks are called "star mine." In 
principle, regardless of the form or type of fireworks, a "star mine" is understood to be a fireworks display that is launched continuously within 3 seconds.

前半は直線的な花火が空に放たれた。後半はそれと共に３秒以上の間の空く、いわゆる我々の感覚で言う打ち上げ花火が弾けていたが、これが速射連発になると、これもスターマインになる。
In the first half, linear fireworks were launched into the sky. In the second half, 
these were accompanied by fireworks that burst with a pause of three seconds or more. These are the type we typically associate with the term "aerial 
fireworks". But when these are fired in rapid, continuous succession, they 
become what is known as a "star mine."
花火が終了したので、早速、手筒花火の筒を受け取りに伺う。整理券を受け取ったテント下のスタッフに何処で受け取れるのかを伺い、水浸しの広場を横切って、筒の立ち並ぶ場所に向かった。
With the fireworks display now over, I immediately went to receive the handheld fireworks tubes. I asked the staff member under the tent, from whom I had 
received my numbered ticket, "where can I pick up the item?", then crossed the waterlogged plaza toward the area where the cylinders were lined up.

筒の重量は10キロ以上はあろう。実際に手にしてみると、ずっしりと重い。これを抱えて豪雨の中を歩いていたのか思うと、感心してしまう。中心の穴からは、燃えた火薬の香りが漂う。
The cylinder likely weighs over 10 kilograms. When I actually held it, it felt quite heavy. I find it impressive to think that they were walking through a downpour 
while holding this. The scent of burnt gunpowder drifted from the central hole.
まだ強い雨脚の残る中、筒を担いで駅まで徒歩での移動は無理なので、止む無くバスを利用した。湯河原駅に到着すると、なんと東海道線が止まっていた。駅員の話では、復旧の見通しは立っていないとのことである。
As the heavy rain was still falling, walking to the station while carrying the tube was not feasible, so I had no choice but to take the bus. When I arrived at 
Yugawara Station, I was surprised to find that the Tokaido Line had come to a 
halt. According to station staff, there was no prospect of the line being restored.

今日中に帰宅できるのかとやきもきしつつ駅前で数時間ほど待っていたところ、午前1時には何とか1本だけ最終便が復旧するとの放送があった。
While waiting anxiously in front of the station for several hours, wondering if I 
would be able to get home that day, an announcement was made that one final service would be restored at 1:00 a.m.