Welcome to the keeping of red eyes. I found them to be kind of a pain at first, but after you get the basics down, they're not that difficult.

If you''re not comfortable with the crickets running around the tank, you could try using a food bowl. Crickets can't climb smooth surfaces well, and for some reason are too dumb to jump out. A small smooth sided bowl will work. It also will give you a better idea on how much they're eating as you can see how many are gone the next day. If you don't want to use a feeder bowl but want to make sure their eating right, there is another very easy way to tell- poop. If you see droppings in the cage the day after feeding them, they're eating.

Lighting your frogs so you can watch them at night is a subject that seems to be a bit of a debate here. Red eyes sleep for around 18 hours a day, and are only active at night. Unless you watch them at night, you'll never see them do anything besides sleep. I personally use the red night lights/heat bulb for nighttime viewing. Red Eyes can't see this light wavelength so they don't know the difference. I've heard other people say to keep them in complete darkness and that the night lights do disturb them. I personally have not had this problem. The red lights work well, you can use the "moonlight" bulbs that are blue, but they don't give as much light as the reds and make the colors of everything in your tank a little strange. I've heard other people have used black lights, but I cannot give any advice on that since I've never used one.

Good luck with your new pets.