by the age of 18
Relax as much as possible. give her a massage and unwind for a long time. then kiss and have lots of foreplay
Yes, it is possible to have sex in a hotel room as long as it is consensual and follows the hotel's policies and regulations.
Sex can last a period of time depending on the two sex mate
is possible to change fingerprints by chemicals for long time or short time?
yes
You can't, best to get a few condoms.
Yes, it may decrease the sex drive.
as long as you can there is no specified time limit to do?
About ten mins or more
You should never have unprotected sex. I am also unsure as to what you mean in saying "how long". Exactly what is it that you are waiting on?
Yes it is possible, as long as she feels the same way. If not then you can't force her into anything, try and have a conversation about it in a non-sexual environment so you can think about the possible relationship and not having sex.
no.