My two cents on the topic. A devaluation can bring both positive and negative aspects. All countries have two main activities, exports and imports. One of them brings money into the country (selling wheat, soy for example), the other one involves money leaving (buying supplies that are not being manufactured in the country). As you can imagine, is better to have more money coming in, than money coming out (deficit-superavit).
By decreasing the value of the currency, the country will be more competitive against others as their currency (usd, eur, etc) will buy more products. The negative side, life here will become more expensive and salaries will have less buying power. There is no direct correlation, it doesn't mean that a devaluation of 50% will mean that everything will increase 50%. Stores selling imported products (such as technology) will increase minimum, at the same rate of the devaluation. Those who gave services, will increase their prices a little if they use some of imported product or none if they dont. If a product is being manufactured here in arg and uses something from brazil, the price will increase due to that part. So, in other word, prices will raise in almost everything, some of them will increase a lot, others wont (or shouldn't, but fear and speculation will make some of them increase even if they don't have why).
My opinion on those points:
1. Real Estate Prices and activity.
I don't think a devaluation will change much this. This market uses dollars to set prices today, so if this happens, it will increase prices in pesos as it has been happening since the currency controls, nothing new on this aspect. A devaluation will probably drive the price of the blue dolar higher, making properties a hard thing to buy if you earn in pesos.
2. Tourism.
Will increase from people from other countries, as their currency will allow them to buy more things than before. This will push sales and economy as foreigns will come to buy things. Tourism for people leaving argentina will decrease, as it will be x% higher than before, making that trip to europe a plan for the future.
3. Prices for local goods and services.
Everything will increase, some of them at the rate of the devaluation, others will increase less because they don't use imported products. I don't think prices will stay steady on many stores, one way or another, almost all activities have some sort of relationship with the outside world.
4. Other impacts you deem important.
If the currency controls stays, the situation wont change much as we have been seeing today. If they put the official peso at a rate of 8 pesos 1 dollar, the blue rate will spike at less say, 14. People will see this as a warning -an a lesson- for not buying before, making the price of the blue dollar going higher and higher each day as we have been seeing with each announcement. A devaluation will be good if they lift the restrictions and leave the price to be fixed by the market as any other country does.
Oh, I wrote a lot again, sorry about that