Because I rent 4 bedrooms house, it's more conducive to large gatherings and parties.Another issue and please tell me if this is normal that when people book for 5 people they usually have at least 10 or 15 additional guests. 

Rent growth is a function of supply, demand, and interest rates:- I'd ground any forecast by stating I expect national rents to rise on a pace more or less in line with inflation over any long time period. 2-3% per year.

Quote from @Stephanie Menard: I rented a furnished home in Las Vegas, NV, to a fully screened tenant.  

Everyone will tell you it’s great to get started early, or you can just move after a year, but in the current environment in our region the rent your property will generate after you move out will likely be less than your mortgage, if you are tied to the area and feel confident you want to stay in whatever property you buy for 3-5 years go for it, if you want flexibility rent and throw that money into and index fund. 

Hi Everyone, If I only have tenant's birthday, driver license number, and phone number, can I still have a collection agency to help me to collect the delinquent rent?

U will never get a dime of rent and you are going to have to probably do as you stated find your own attorney.. its better to leave property vacant than to rent to folks that have terrible credit.

Would you help is wedding coordinating/planning or just rent the space out?

There are several other issues (undisclosed maintenance markup fees, excessive charges to our account, significant reductions to agreed rent without communication, etc).

He can’t rent the property, at his age and capacity, he can’t rehab the property. actually if he tried to do the work, it would probably turn out worse.

Both are rented.