You have no idea how deep I had to dig through the strata of books and DVDs to find this one. While I accept part of the blame for accidentally messing up not just order but also series, I have to frown significantly at Pioneer, or at least the ghost of what was once Geneon which was once Pioneer, for not including numbers on the CCS DVDs.
The… fifth? Yes, I think it's the fifth… DVD of Card Captor Sakura is titled "Vacation Daze", in the predictable pun about how three of the four episodes in this disc deal with Sakura's summer vacation. I suppose that one is more likely to remember the more hectic parts of one's holidays, as evidenced by the blurb:
Summer is nearly over but Sakura's tests never end! Sakura's school stages a test of courage in some scary caves, but when the Erase Card makes her friends disappear, Sakura and Li rise to the challenge! Then, The Glow Card creates a romantic mood with Yukito, only to have it spoiled by Li, Toya, and her undone homework… If only The Move Card would leave her books alone! Finally, Li's cousin, Mei Lin, arrives from Hong Kong to help Li capture the Clow Cards, but she thinks Sakura likes Li! No way!
I'll leave the in-DVD extras for next time, but the out-of-DVD extra consists of a postcard of the CCS girls on the beach, meaning Sakura, Tomoyo, the trio of Chiharu, Naoko, and Rika, the soon-to-be-introduced Meiling, and the definitely-not-introduced-yet Kaho Mizuki as the only adult present. The caption is "Fun In The Sun", and all this would probably be more appropriate if I were reviewing it half a year from now, when it's actually summer in the northern hemisphere.
For now, we'll deal with what would technically be the staple beach episode of the series (well, this season anyway), entitled "Sakura's Scary Test of Courage", referring to the kimodameshi activity which happens on lonely, spooky nights, usually organized by friends of a certain couple trying to get them together. If anime is to be believed, summer is a time of beach excursions and scary stories.
Also, natsu-matsuri, but that's the next episode.