As of early August it was open seven days a week. It's a great experience, be sure you block off a few hours for the whole thing. Great place to walk around and people watch!

Not far, probably a couple kilometers away, if that. I’d say about seven to eight blocks. About a $1 tuk tuk ride.

No if you want to ride a elephants you need to go to Siem Reap and go to Anchor Wat

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There are basically 2 relative seasons there (rainy & dry). The sun rises early appx. late 5am+ to 6am (Cambodian time). Usually it should be appropriate from mid-7am+ after a good breakfast! Hope I answer your question. Have a good journey! Be safe and cheers!

There is an implicit dress code when entering any Buddhist wat. It's basically the same code that IS enforced at the royal palace/temple complexes in both Phnom Penh and Bangkok. The only bit that is enforced at Wat Phnom is not wearing shoes. However, walking into a Buddhist shrine or monastery with bare shoulders or a revealing top, shorts or a short skirt, does offend the feelings of devout locals; even wearing a tee-shirt might, since sleeves should be at least down to the elbow. Many local lasses handle this by carrying a shoulder-bag containing a long skirt and shawl—both are incredibly light-weight and cool (and both can generally be purchased dirt cheap at night markets). When they get to a wat, they don the gear just before entering, and take it off the second they leave. Another advantage of this system is that the same shoulder-bag can be used for your shoes, rather than leaving them outside the door. That’s convenient if you leave a hall by a different door than the one you entered, but it also prevents your shoes being stolen. Wat Phnom is notorious for shoe-theft so I’d definitely recommend shoulder-bagging your shoes before going inside this particular wat. p.s. After several years of wandering about in Asia, I was concerned enough about temple etiquette that I posted a review in Trip Advisor with a list of 10 etiquette tips. It’s my review of Wat Phra Singh in Chiang Mai, Thailand. You might want to give it glance; the same basic rules hold in Cambodia, Laos and Myanmar, and most are just as valid in Kyoto or Lhasa. p.p.s. I was thoroughly disappointed in Wat Phnom myself, but try to see Tuol Sleng and at least one Plae Pakaa show while in Phnom Penh.