Value of food is hard to judge, where we live, a low cost of living area, a comparable meal would cost about $30 per person.
We just add the tip to our room key. You will hear many different opinions on how much to tip. My husband, who was a waiter during college, bases the tip on how much "work" we create for the wait person, how many times they have to come to our table and how long we are at the table (if the table can turn over quickly then wait person can take on another set of guests). If it is just he and I, we are low, low maintenance and we do not linger long so we generally leave a $20 tip for the two of us. If we are dining with others, we tip more because the work load is higher and we occupy the table longer.
This does not pertain to Palo since it is adults only, but when our child was young and we ate out, we always left a large tip to compensate for the extra mess a wee one makes.