There are a lot of advantages to being cabin crew and depending on which airline the crew member works for, that will determine the perks provided.
Lifestyle
In terms of lifestyle, rosters are not normal working shifts or days, so you may land at 06:00 but have the rest of your work day off, or you might not report for duty until 23:00, so it is fairly easy to fit in some life around work! On average a long haul international cabin crew member may work between 15 and 20 days a month. Depending on the airline and seniority (how long someone has been with the airline) cabin crew can 'bid' for trips that they prefer or swap trips with another crew member.
With long-haul crew, it is possible sometimes to commute from another city instead of living near the base, although this can be tiring. So you could live in Paris, but commute to London, for example. You can potentially choose your airline to suit your lifestyle - some people suit the international lifestyle whilst others prefer to be at home every night and be with their families, so regional or low-cost work is better for them.
No routine and lots of travel
Of course, every day is different and there is no routine as such, only procedures. Cabin crew will rarely work with the same crew, so you are always meeting new crew members and making new friends. Some cabin crew have layovers and get to see the world whilst working. Transport, a four or five-star hotel and a meal allowance are usually included. It is a great way of visiting places, although the stay is somewhat brief in most cases. Nevertheless, crew members may get to see some sights, do some shopping locally and eat the regional delicacies.
Staff travel is a bonus; cabin crew mostly get discounted flights for family members and sometimes friends. These can be ID90 fares, meaning that the crew member only pays 10% of the fare, but travel is on standby and only if there is a seat available. Sometimes, airlines can offer other fares that are confirmed but at a higher price or with a confirmed upgrade. Staff travel can be for just the airline network that you are working for, or some airlines have codeshare agreements, meaning that crew may be able to travel standby on some other airlines too.
If cabin crew decide to uproot and start a new life in the Middle East with companies like Qatar Airways, Emirates or Etihad, shared accommodation is provided and there is free transportation to work. Cabin crew in these airlines are generally well cared for, and many costs are covered or discounted. However, sometimes there are strict rules that have to be followed, and it might not be for everyone.
A smart uniform and free dry cleaning for it, are an advantage. Health and life insurance are usually included, and some companies offer a pension plan. Air crew, in general, can get discounts on international hotel chains, which is very useful. Employee discounts, individual to each airline may include local gyms, spas, healthcare and even some stores.