And welcome to the forums. I'm not sure, but I think it might be addictive!!
About the times of their activities - as far as I know there is a button somewhere on this sight about times etc. I just don't know where - but I'm sure other mites will help.
As far as picnic spots go.... you have PLENTY to choose from around Satara:1. Nwanetsi Dam
This is a dam to the east of Satara with a picnic spot. Take the "dustbowl" S100 to get there - a busy dirt road but one where you might see the cats. You will either love or hate this road. N'wanetsi is about 35km's from Satara and what I love about it is that the picnic area is a distance away from the actual lookout... makes the lookout much more peaceful.2. Muzandzeni
This is a quiet picnic spot South West of Satara - about 32km's away. Take the H1-3 South for 10km's and then turn right onto the S126. There isn't much of a view but it's nice and quiet. Just note that when we were there last week that whole area was on fire - so it might be black for the next couple of weeks... not necessarily a bad thing - but some people don't like it.... personally I think you might get to see the little critters normally hidden in the grass.3. Timbavati
Situated 23km's North West of Satara take the H1-4 north and turn left onto the S127.... or even better take the H1-3 south for 2km's turn right onto the H7 towards Orpen. Then turn right again (north) onto the S40 past Girvana. This picnic spot has become very busy lately. But there is always a chance to see a bushbuck or 2 up close. But please, please don't feed them. An added benefit here is that the Ratelpan hide is just around the corner.4. Nhlanguleni
If you wanna travel a bit further you can go South West to Nhlanguleni. 62kms south on the H1-3. Turn right onto the Vutomi road (S33 - great dirt road) and right onto the S36.5. Tshokwane
If you're looking for a picnic spot with a shop and nice Kudu Rolls or Pap&Sheba you can take the H1-3 south to Tshokwane. 49km's on the tar road - but there are many, many, many dirt roads along the way if you wanna take the scenic route. PS: I see that they're stuck with a food stealing baboon troop again 6. Olifants Camp
If you wanna go north and have one of the best views in Kruger, you can go to Olifants Camp. It's got a view to die for... but unfortunately the picnic area is behind the shops and not with the view.