I have cut back quite a bit on travelling because I know that nobody will care for my animals as conscientiously as I do, but I still do get away. First, try to find somebody you trust around your home and animals and hopefully get someone who CARES; at least if not for the animals, then for you because you care about them and would be devastated if something happened to them. This may not be the first available person. Relatives may do it because they feel obliged, but if they don't care that much, they might have the attitude that if it's not good enough, oh well, you're still family. You may have to PAY somebody. My ex-boyfriend used to care for my animals but when his job got too busy, I started paying reliable older neighborhood teenagers (see below for the animals I have requiring care). The kids appreciate the money and I pay them well enough to do a good job and want to do it for me whenever possible. I don't have a lot of money, but it's worth it to me for the well being of my animals. To me, it's all part of the cost of going away as much as transportation expenses.
I leave a very detailed written list of what to do, and walk sitters through the whole process. I try to think of all the variables and "what-if's" and of course leave contact information. (Which has been used-"Where can I find the white chickens?" to "I lost the house key"). I have never had any real problems. Sure, the duck water wasn't as clean as I would have liked and the parrots had more food than usual, but no big deal.
I also have big enough pens that the chickens and ducks can stay in them while I'm away and be fine without their free-range time. Then all that has to be done at night is to make sure all the chickens have gone into their coop, just the extra layer of predator protection within their pen. This was an up-front investment so I wouldn't have to worry about always being home at a certain time. I don't have to leave Thanksgiving dinner at 3 pm to drive home 2 hours to let the chickens in before dark anymore.
Try to have several people who would be willing to do the job and give plenty of advance notice. Sometimes pet sitters will post on Craigslist and other places. You may even be able to do a critter-sitting trade with other locals.
Good luck!