I have done quite a few of them but not for several months. There is another thread about this recently that i just answered a few days ago. I find the reports time consuming but not at all difficult to do. Searching for the items you need to review is sometimes difficult and sometimes is very challenging...It all depends on the venue. YOu need to find quite a few places so when you have a large venue it might mean walking back and forth in order to complete the shop several times. If you love the place and want to visit, take family for free it is worth it. But little kids i think would divert you from your "job". I would suggest if you go with small children doing some of it on your own and meeting up with them while they aer with another adult. When you need to buy things sometimes the least expensive thing at a particular shop on site might be $8-9 and that eats away at the money you get. Some giftshops sell pencils and postcards so you can spend very little. But if you need to purchase at a small cart gift shop I have found them to usually to be pricey stuff. Food also...to not lose money for instance I did a zoo shop and had to eat at 5 restaurants. there were only 7 open that day. The first one i encountered was a sit down iwth real plates place. They do not want you to just get fries alone or a drink alone at all the places. So you need to be strategic...I purchased a mexican dinner for around $8 (would have been $4-5 on hte outside), one hamburger at a place that had those and one hot dog and a chicken meal and was able for the last one to just get fries. Some places only had whole plates on the menu. I have done museums which I found easier but if very crowded hard to get around. and some of the places close down early so what you need to review is gone by 2 PM.
I have never done one for tickets only but it sounds like a good deal if you will return yourself and it is not a better deal then just buying an annual pass. The theme parks around here sell annual passes for little more than one days visit. If you have friends/ family visiting without passes and wnat to give them the free tics that would work out well and be a good value.
Anyway, the guy who owns the company, Scott, is super, super nice. He is the best part of the whole experience.