Much (most) of what RAC posted is correct!
Anything written in for more than 90 days would be contrary to the law-have NEVER heard of it happening!
Entering the country at the airport you are not likely to have much of a problem getting what ever you want (# of days) since most of the perpetual tourists do their "90 day visa runs" by land to Nicaragua or Panama-Panama not so much now since Panama's head of inmigracion took it upon himself to "change" the law to requiring a ticket back to your country of residency. For Gringos that is an airline ticket back to the States good within 90 days!
Perpetual tourist: There is a concentrated effort on the part of inmigracion in CR to put an end to the practice. What I have been told by a top official in inmigracion and by my attorney is that inmigracion clerks (sorry RAC but since less than half are female, I will refrain from calling them "witches"!!
) at the frontier locations are under orders to look for people who appear to be "perpetual tourists" (those with a lot of stamps coming and going in and out of CR about every 90 days and only out for a few days before re-entering.) They are under orders to talk (threaten?) to these "tourists", give them reduced days on their visa, even mark their passport for "review" the next time when re-entering. Last time I re-entered, I was told that if next time I had not started the residency process I would only be given 21 days--to that point they had been giving me a lecture and each time reducing the number of days by 10 less than the last time. A fellow CRT member who was with me on that trip had his passport marked for review and was told he probably would be denied re-entry the next time if he had not started his residency application.
As for talking to a supervisor, I did (or rather, tried) on two occasions! Once he refused to even talk to me; and the first time, he stated that the clerks had been instructed to reduce the days for perpetual tourists, and they had total discretion on this point and there was nothing he could nor would do!!! I seriously doubt anyone accomplished much by complaining "right away" nor later!!! I have seen many try, and have seen NONE succeed!!!
And, YES, you ARE suppose to have a ticket out of the country no matter where you enter. At the airport you will seldom be asked for this since they know the airlines are not going to let you on your flight without one. It is the airlines responsibility to take you back if you are denied entrance for this reason. At the land borders you are much more likely to be asked to show a ticket thou not always. I have had a "opened ended" ticket to Nicragua for years. Funny that the first time they reduced my number of days they also suddenly had a policy that thou the ticket was open ended and the bus (Ticabus) had said it was good forever, Costa Rica inmigracion would only accept tickets less than a year old!!
The biggest reason for this crack down IS because of the CAJA, but the problem has arisen because of the very large number of perpetual tourists with no means of paying their medical bills running up huge bills and skipping out!!
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Old and retired but still bang, and bang, and bang!!!