Pros:
A few nice daily prizes. Stage of Ages is very nice.
Ability to switch out daily prizes once a day if the regular one doesn't appeal to you.
Special Incident icons for the Incidents with Event currency.
Cons:
Over1/3 of the squares on the mini-game board are given to mostly prizes with minimal to zero worth such as avatars, coins, supplies and medals. Even many of the buildings in the non-chest squares are only good for AD fodder...and many of those have little resale value at that.
The fact that one square gives you only one 5% increase in possibility of getting daily prize. If you go around board multiple times and land on it again, you get nothing.
Speaking of that, if you land on the starting square, you get nothing but the grand prize for that time around. If you pass it and land on a following square, you get the grand prize plus another prize. So you are basically penalized for landing on the starting square.
This may just be perception bias, as it is in many such cases, but it does seem to me that the daily prizes are being awarded at a much lower rate than advertised, even when you get the extra 5% chance. I am usually skeptical of such claims, but I play 9 cities and have spent most of my Paper Money on every one of them with very little to show for it on most of my worlds. There are a couple where I've had moderate success, but the non-chest squares combined with the low payout means even when you have a few thousand event currency and spend it all, you may not get very many daily prizes. On a couple of worlds I have spent thousands and gotten zero daily prizes. Lots of useless avatars, but no daily prizes.
Perhaps most disappointing of all, to me at least, is landing on the lower left corner square and not getting a Grand King or Grand Queen selection kit. They're not worth much at level one, and I've yet to get two of either one on any world despite landing on that square multiple times.